Is there any significant different between BeejiveIM & IM+?

I installed IM+ Lite, try to run it and it works fine... so I didnt lookout for alternative. But I see a handful of user here opt for BeejiveIM, is there any speciality in it?

P/s: I rarely chat on msn, I think I run my IM+Lite for not more than 3 times since the day I installed it