These are my choices:
guitar =lowden or nylon string(jim murray style)
flute =grinter,olwell or sam murray
bodhran =seamus o kane or darius
banjo =boyle or paramount
mandolin =joe foley
accordion =hohner
concertina =jeffreys
they are the best 
guitar =nope
flute =Tipple or Casey Burns
bodhran =nope
banjo =Vega
mandolin =nope
accordion =Castagnari
concertina =nope
Guitar=nope
Flute= Olwell, McGee (already have one, does that count?)
Bodhran=nope
Banjo= Don’t play one these days, but if I did still, definitely a Gibson Masterpiece
Mandolin= same caveat as above, any mando with good punch.
Accordian= nada
Concertina= Don’t play, but my friend’s Dipper sounds fantastic.