Magnitosh,
Hopefully, I'm not too late with this...I would definitely pick up the 5.5s! I bought mine new in '94, and they still blow away everything my buddies have. If they've been cared for, you should be very happy. The 5.5s are suited to loud music with a lot of base, but I think they do a great job with Diana Krall and Norah Jones as well. The are rather large, however, and take up most of my small living room!
If you have a hard floor surface (I have Italian tile), I would recommend a rug or carpeting under them, or at least make sure you use the plastic feet.
Actually, I was wondering how much the 5.5s are going for these days, you know, just in case I decide to upgrade.
