Upgrade or sell Infinity RSIIb speakers


I'm wondering if someone can help? I have the aforementioned speakers in apparently excellent condition. I haven't listened to them for about 3 years, but I will likely be able to set up a dedicated listening room next year. In anticipation of this, I started research in upgrading the wiring and active and passive x-overs of this set to maximize their capabilities. I've been told by a well respected, and seemingly very technicaly knowledgable, reviewer that I should get rid of my speakers because of their "design that just doesn't work well" and get a pair of time/phase accurate speakers like Vandersteens or Dunlavys. Now if money were no object, I would do so, but I would like a concensus, if I could get one, on what I should do. I was also planning on getting the TacT room correction unit as well. Might this unit not correct the time/phase inaccuracies of a speaker as well?

Sorry for the long post and thanks if you can help me out!
mikes
Thanks, Paul. This kind of response from someone who's had a series of speakers is just what I needed.

Mike
I'm a reviewer also, and I'm familiar with the RS IIb's and other Infinity speakers. I agree with Paul. Those are very good speakers and are capable of providing very high-quality sound. Keep them. I don't know who the other reviewer might be, but it sounds like he has an agenda for whatever reason -- either that or he's not that familiar with your speakers and shouldn't be giving you advice.
Although I have never owned the RSIIb, I have heard them enough times to tell you that you won't be able to do significantly better without a substantial investment. I do know that the bass was a little sluggish so a "fast" solid state amp (a used Muse 100w could be had for about $400 or so) for the bass and a decent tube amp for the upper (CJ Premiers would work as would VTL Mono 100s) would bring the performance up quite a bit. I think MIT cable worked well with the speakers I'd heard.
I owned the RS2b's and enjoyed them very much. You do need plenty of room to let them breathe. I never had much success with bi-amping. Even though solid state on the bottom did improve the bass, the overall sound lacked coherence. This bothered me more than the sluggish bass. I agree that the CJ premiers sound wonderful. Mate it with a CAT signature preamp (any version) and you will have a system that is tough to beat.