You Klipsch Forte's WOW... Impressive.
If I were you I would check the return policy on both of them. If the return policy permits, I'd buy them both the Parasound and the Crown XLS. Have a friend come over a blind test on the amps listing to the same songs on each amp. What ever you think sounds better keep it and return the other one. Do you really need all that power? Probably not but hey it never hearts to have extra watts available.
In a couple years I would like to buy a pair of the Philharmonic audio's Phil 3's and pair it with some high-end electronics. I want to do a blind test on electronics and see if I can hear a differences between, separates vs integrated amps vs mono blocks. I know not all amps sound the same but once you go into higher end gear I'd be curious to try to find differences between amps. I think it can some times be mental thing... eg. just because it costs more it must sound better. So BLIND TEST away.
At the end of the day, it's really all about what you think sounds better.