The Eb Clarinet that I currently play is a Yamaha YCL681 (http://www.music123.com/Item/?itemno=22663) It`s nice and has sa good responce, but is there any other Eb clarinets out there that people think may be of a better quality? Also, I was wondering if the clarinets in different keys, like the saxophone, have the same fingerings, or do they differ?

Buffet Prestige (R13 or RC) Eb clarinets, I have found are more responsive than most and also have a greater tendency to stay in tune. Also, a normal R13 Eb clarinet is popular as well...stay AWAY from the Buffet E11 in Eb - they are absolutely awful.