amp rec for spendors

I'm new to this site and found this thread so I thought I might ask as well.
I'm running a very clean dynaco Pas3 preamp completely rewired and nicely setup along with the ST70 power amp that has also been worked on and is in perfect operating condition. I've been looking into purchasing a pair of spendor 3/5r's and was looking for some thoughts on if this might be enough power to make them sound clean enough. Also thought about the 6Se.
Please any thought are great info before I borrow a pair from my local dealer in Chicago and listen to them myself.
Thanks!

Goheel: a friend is using a 47Lab 50wpc Gaincard to power his Spendor 7/1 and he is quite pleased although he misses his tubes but does not want to spend the money on a tube amp powerful enough to power these puppies AND give a quality of tubed sound close to high end SET.

I've been asking the same question about powering my Spendor SP1/2E loudspeakers. At the moment I'm using a Linn LK-2 amplifier, w. 60 wpc, which is quite a musical piece, but I'm getting restless for a different kind of amplifier esp. to improve bass and soundstage, without losing the Spendor midrange. The classe suggestions is interesting; I've not yet heard that line of amplfiers. Anyone had expereince with Spendors and either Mcintosh or Plinius?

Go with a used classe DR-9 amp excellent performer plenty of power built to last and sounds very close to tubes with ss strength. Find them used sometimes on Audiogon. But please do not pay over a grand for one...to many people selling them for way to much Imo.