Recently I’ve had a contra bassoon to use while i have been playing in the San Luis Obispo Symphony. Im not much of a contra player but its been fun to play some old rep again on it.
these contra bassoons can be bought for CHEAP at:
http://www.wwbw.com/Amati-ABN36-Contra-Bassoon-464436-i1425200.wwbw
Kristopher King 
I read this article fully about the comparison of
most recent and earlier technologies, it’s
remarkable article.