I would start with a Generation D,which you can get from Hobgoblin and is playable and cheap, if a little piercing on the top notes. Anything else is a jump up in price. Someone mentioned Susato, which are not too expensive. I play a Susato D for morris, which is quite loud and carries above melodeons, and a Susato C for medieval music. The C is actually much more pleasant to play and to listen to. If you want to go up market, look at the links for the Taborers Society, which someone posted above.

Good luck.

Tradsinger