You can’t go wrong with any of the above. IMO,the zen of tin whistle playing is that a whistle is at heart a very cheap instrument, yet with a little bit of effort and some perseverance, you can learn to make wonderful, complex, dancing, music out of an instrument that’s priced like a toy. That’s the magic. You’re spinning straw into gold.
I used to busk with my whistle, and I’ve lost count of the times that people came up to me - often moms with a kid - marveling that I could get that much music out of looked to them like a toy. I doubt that would happen as often these days, cuz whistles have penetrated a little deeper into mass culture and more people now know what they’re seeing, but the magic trick is still the same.
But for me, that trick doesn’t work with high-end whistles. If you’re playing a $250 artisan-made hand crafted whistle, you can do lots of other things but you can’t do that one trick. For the money it damn-well better sound good.
However, the bane of mass produced factory made whistles is poor quality control. When I bought most of mine, I’d insist on tooting the entire jarful and then buy the best. A good half would be be bad and many qualified as horrible. The problem for you is that its hard, now, to find a music store that’ll let you do that. Public health regs see sticking something into your mouth and the putting it back in the jar as a health risk, and the shop knows that if they let people cherry-pick, the store will end up with half a jar of unsalable dregs. As well, if you’re new to the whistle, you might not yet know enough to tell a good one from a bad (tho it won’t take long to figure it out.)
Jerry Freeman solves all these issues. You’re still getting the cheap instrument mojo that (IMO) whistles ought to have, but you have Jerry’s had-won expertise in your corner to make sure what you get has all the best and one of the worst of what a whistle can be. Its well worth the modest markup he charges.
So get one in D, but it won’t matter which make or model. They’re all good, and the difference between any two cheap metal tube whistles are much slighter than you’d think from the way we carry on about it.
So flip a coin or order the one that matches your girlfriend’s eyes or pick one at random, or whatever.. If you carry on whistling, you’ll soon want one of each, anyway. They’re cheap enough so that you can do just that. If you don’t carry on it won’t matter what you bought anyway.