The only think I can add is when I demo'd Kilpsch they sounded rather tinnie for music. What are you using the speakers for 50/50 movies/music? 20/80?
BTW - the rave reviews for SVS are 100% warranted and I would skim off a little on speakers to get an SVS. Reason is that you will need less base in the speakers - HOWEVER.
although I've CERTAINLY not an expert myself
If you went with the E80s ($300?) and the E30s ($180?) you could get the new SVS coming out ($400?) with ease.
OR - move your current Infinity's to the back for surrounds - buy some BETTER fronts and get a bigger SVS (just thinking out loud)
.
As you can - like a moth drawn to light I have fallen in love with my SVS.
also - the E250p is about $475? hmmmmm there is a $400 SVS coming out later this month I think.!
Don't forget to tell your wife you love her VERY much.