Infinity RS1B ? Buy or runaway

I have an opportunity to buy a set of RS1B in excellent condition. They have been well taken care of and are very close to home. Years ago at a Stereophile show, I heard them, wow! The sound and their presence were fantastic! My fear is that like a lot of other things I look back on and lust after look ALOT greater in my memory than they actually perform. Given my current set up and room, I wanted to get some opinions about buying. Or will I be disappointed, maybe due to equipment or the room limitations? I don't think I would get rid of the Apogees unless the RS1B's surpass them in sound quality. Very nervous laying out over 4k for something that won't move quickly if I end up not enjoying them.
My room dimensions are 13' 9" X 25' (Converted garage)
All equipment is located on the front (13' 9") wall with an entry door at the front right corner. Listening position is approximately 13' from the front wall
Current equipment
VPI HW 19 MKIII
Rotel RSX1067 ( for HT)
Audio Research SP4 (lightly modded)
Audire Forte amps x 2 (bi-amp)
Apogee Caliper Signatures
McIntosh MVP891