I have used Twitter a lot but I've discovered identi.ca now and some of my friends only use that so now I'm looking around for a good identi.ca client for Linux. I use several distros such as Ubuntu with Gnome and several KDE based distros (Mandriva, OpenSUSE, CentOS, Fedora).
Which are some of the best identi.ca clients?
Also, are there clients that work with both identi.ca and Twitter so I could just use one client?