I gave Jabber another chance a while ago... using both ChatSecure on the phone and Gajim on the computer (phone+computer logged in on both ends of the conversation). Unfortunately it was a complete failure. Message arrival was flakey. Some messages arrived only on the computer, others only on the phone. Conversations were sometimes one-sided, with one half on phone, other on computer. Not usable for chat. All around, I have to sadly say (after 15+ years of Jabber use) that this is what I'm used to with Jabber, and that I honestly cannot recommend it to friends :-/