Those are three different sounding amplifiers. No doubt you will find one that suites your taste better than the others. There is no short cut other than try all three amps and pick your favorite.
What about power for Vandersteen 2 speakers?
I have three amps I can use, 50w YBA, 100w Krell and 200 wpc Rotel. I listen to jazz in a small room and as long as I don't get silly with the volume the smallest amp sounds the best. I know Vandersteen rates the speaker between 40-160w but it works fine with the 50w YBA amp. Is it better to use more power or should I stick with the better sounding YBA?