What kind of digital video camera

[Augustin <beginner2005@masquilier.org>]

Hello,
 
 I am about to purchase my very first digital video camera. I have never bought 
this kind of hardware before, and as a KDE user, I'd like to enquire what the 
linux community would recommend. I want a low-to-mid range camera (up to $500, 
more only if specific features are worth the price difference).
 
 What specs should I pay attention to?
 Storage?
 Generally speaking, how is the linux support for digital video camera?
 What about kdenlive support?
 
 Thanks,
 
 Augustin.