Golden Ear Triton 2 amp preferences?

I'm using an ARC VS60 on my Triton 2s. It's pretty good but I'm not completely convinced its the right thing. Anybody have any other ideas based on use and listening?
What's your preamp?
As long as you're not underpowered, I would get a preamp instead. It should make a bigger difference in your system than a new amp. If you're working with a dealer, see if they will lend you some preamps.