I've always believed in Yamaha products when I'm not going boutique - hence my first student flute is a Yamaha (my Clav is a Yamaha, as are my recorders - ok so, I'm vanilla) ...and I'm now learning COA on an entry level Yamaha. Enter my experience with the popular Yamaha 221 (trialled units were both 10-13yo).
No doubt my field of experience is currently v limited but I can attest to this...
Well, I happened to land 2 exceptional clunkers (from ebay & gumtree respectively) over the past fortnight and the first is pretty amazing, responsive, full of character (if you could term a 221 that, for jazz music - specifically Jeff Kearn's Play On) and timbres alive under my fingerrrs! Knocked my socks off. So easy to play. Tonight I played through half my repertoire with it and am positively in love with it, esp when it only cost me 201$. Cosmetically, this isn't as mint as the second I purchased locally through gumtree, but it was pretty amazing - my thoughts are, the flute must've been professionally maintained or had an exceptional technician. Man alive! The 2nd, pretty & minty one played great as well but by comparison... "not quite the same". But after COA, Clunker 2 was pretty amAzing as well (I surprised myself and almost didn't want to let it go). There wasn't much needed to be done, just lost motion on a key and timing adjustment on another and a corkpad replacement. In the process, something happened and Voila. (I'm guessing it's the headjoint cork adjustment)
Today for the first time, I had the opportunity to testplay two 6 yo Jupiter 511 both claimed to have only been very briefly played prior to being stored away for 4-5yrs. Hearing good things about Jupiter and it's link to Altus, I couldn't wait. Some shops claim Jupiter to be better than Yamaha as well, eg the one up my street. (perhaps softer metal to repair?) But... major disappointment. I just could not get a good tone out of them, there wasn't any projection. It was pretty awful (played one in a home, one in an open carpark) Except for one obvious key in one of the flutes, keys seem to seal ok - but this is after just a quick visual check without using feeler tapes. BOTH 511s had exactly the same lacklustre response and unremarkable tone. Am I that bad! (must've been!) The mother said to the son, Oh that so reminds me of your playing. Helloo, excuse me... I thought I am quite decent on my Yamaha 221... in fact my flutes TQ

Because they were both quite pricey one asking $380 and the other $480 (New only $525) with extras, there was no way I was going to even try to "improve" them, as I'm not confident with pads yet - besides I thought perhaps it could be the headjoint design and cut. A mag test would be great here to check the seal. BUT I really felt for the kids, they both gave up because one of them told me, it was just too hard to get a good tone out of it and lost interest. He opted for the piano instead. Ironically, they were recommended by their school, so there must be something good - just not in my experience. Kindly provide your educated thoughts.
I'm no pro. But my personal experience indicates there is a REAL DIFFERENCE IN PLAYABILITY (between the four USED flutes I tried). And Yamaha have come up trumps for me, in respect of playability, durability, reliability, resale value.


Also, does anyone know what the DIFF is b/n the Yamaha F100ASII and the 221 model? Love to hear your reviews.
Please excuse the ramblings of this newbie on a discovery trail and please pardon any obvious ignorance on my part.
