Which ICQ client did you choose?

Generally, I have a rather negative attitude towards this type of messenger... I have both ICQ and QIP installed, but I almost always use ICQ, and even then, I'm usually in invisible mode. I have them just for the sake of appearances and in case someone wants to chat. Otherwise, I don't really care what it is – ICQ, QIP, or something else – the main thing is that it's fast, simple, and without unnecessary features.