Steveott,
The Vandys are 7-ohm, 86dB, 40-160 watts, the Snells are 8 ohm, 90dB, 50-250 watts. I'd think at least 100-120 good watts, naturally more never hurts.
The Vandys get lots of press here, but I think the Snell CV's are not as well known. Two friends of mine each run a pair...really wonderful speakers(would give the Vandys a run for their money...and might win) & used they cost in the $850-$1000 range($2600 new). They have have a character similiar to the Vandy in that they are very easy to listen to. There has been 2-3 pair listed here at A-gon in the last six months. One pair lasted about an hour before they were picked up. Either the CV's or the 2Ce's should do well in your room(add on a Vandy 2wq sub and you'd really have something).