A question for the original poster:
In my limited experience, a main concern about concert flutes is the delicacy of the mechanism - keeping it dust free, properly cleaned oiled and adjusted, etc. You mention that the Tucco can be left on a shelf, exposed and ready to play. Is there something about the mechanism that gives you less concern about dust contamination or maintenance than a silver flute?
Deleted - responded in error regarding the wrong flute.
Most of the key mechanism on the Guo Tocco is plastic or stainless steel covered in plastic. I cannot say for sure that it won’t gunk up or go bad in some other way by leaving it out and assembled. I’m taking a chance with it. Right now I’m happy that it’s been on my shelf for a few weeks and not tarnished.
Also, after hearing the Nuvo flute sound samples, I’m not sorry I spent more for the Guo. Maybe it was bad recording or bad playing, but I didn’t like the tone at all.
Kim
I did speak on the phone to a UK stockist who has both the Nuvo and the Guo, and, he said the Guo was considerably superior to the Nuvo.
Then again, the Nuvo is £120, while the Guo was more like £600- so, clearly, that’s going to be reflected in the quality.
The Nuvo, I think, is designed to be a good basic instrument for beginners that can be left assembled (there’s even a wall mounted holder so it can be left fully assembled on the wall) and will require virtually no maintenance.
A more fair comparison would be between the Nuvo and a typical metal orchestral beginners flute that costs around £120, rather than the much more expensive Guo.
Having said that, I’ve no idea if the Nuvos worth the price- the only thing I have to go on are online videos; at the price I was tempted to buy one, but I think I’ll wait a few months to see if anyone puts any decent reviews up.
Interesting! I was just talking to a used car salesman the other day. He said the same thing. 
I have no ax to grind against either of these flutes. I’d like to try them both and see what they are like. Had the Nuvo been around when my daughter started flute, I would have bought one instead of handing her one of my old silver flutes. I just wish someone would do a detailed analysis of the Nuvo vs the Tocco so we could understand where the “quality” is between them.
They both sound good in the videos. But we know how that works, right?
At least the Nuvo is meant to play Irish music - play the video. They even got Ringo as a spokesman.
Any chance someone here can try them both at a dealer? There are no dealers near me that carry both flutes as yet.
Feadoggie
One problem I have with beginner Bohm flutes is that the embouchure hole makes it very easy to produce
a tone but has little ‘depth’ or interest. My impression is that for the price of the Guo one can buy an intermediate
level Bohm flute, if only used. So myquestion is: how does the embouchure play? If this really is at a
beginner’s level, I can’t really see paying 700 for it, nor would I want it for less.
The NUVO was more within my price range.
So I went ahead and ordered one! 
The little white jFlute, only plays down to D, comes with a curved headjoint, but also comes with a cheater! This will allow my youngest daughter to start playing it immediately.
I ordered from here (U.S.): http://www.blockiflute.com/Nuvo-Flutes_c_69.html
Only $150 for the jFlute and $195 for the Student Flute (Free Shipping).
Looking forward to a review.
Good on you, Sillydill. Had I not just bought another Copley flute myself, I might have tried one of the Nuvo flutes myself. So It will be interesting to hear what you think about the jFlute. I saw that Blocki sells them. They are like 325 miles west of here, a bit too far to pop in and try a polymer flute I’m afraid. Blocki seems to specialize in “getting 'em while they’re young”. The Zhao Mini-D flute looks wild too. I guess the jFLute is a polymer flute sprung from the same idea.
Feadoggie
Hi Jim,
Tone control with the beginner Boehm flutes is actually very good, except perhaps for the third octave and above. Many teachers no longer bother teaching articulation at beginner levels. I never learnt articulation until I started the baroque traverso.
The Guo composite flute is very surprising actually. It does feel light; and its embouchure is not only free-blowing but also adept at variegated tone colour. It is much better than the cheaper metal student Boehms and should take a player up to intermediate playing. You can get the composite headjoint alone - these are fantastic value and really transform a sterile cylinder of Boehm metal from boring into interesting!
The comment about the tone of such beginner Boehm flutes having little depth or interest, probably applies to most Boehm flutes in my view. I don’t enjoy it anywhere as much as a baroque traverso or a simple system conical flute. The exception is probably the historical wooden Boehm flutes. I find these have really interesting sound signatures and character. But they aren’t easy to come by and are definitely not beginners’ flutes.
Blocki flute is right here just outside of Pittsburgh. I’m going to ring them this week and see if they have a showroom/storefront. If I get a chance I’ll pop in and see if I can test drive a Nuvo.
Cheers,
Kirk