Best curve phone?

I was thinking about getting a cheap curve as a backup phone if my q10 ever breaks. (No way im moving back to android or something)

My simple question is: Whats the best curve phone? (Cuz I want a curve instead of a bold, the curves got really clicky keys :D)

P.S Not sure if this is the right forum, if not, admins pls move this!

Edit: Thanks everybody!

Edit 2: I think ill get a 9720 or a 9360.

Posted from q10, excuse me for not having any typos.