This is what I'm struggling with now. The Kemper is the same cost as the Fender SB 300. The Kemper may, and I say may, give me every amp I want to try/use right in my own home. BUT, is it good enough to fool me enough to skip the tube head.
I'll be testing this out at Sweetwaters Gearfest in a few months. I've already planned the audition with my sales rep. One of them is coming back home with me.
I've been hearing good things about the Line6 Helix, but I have no direct experience with it - although a couple tone chasing guitarists I know have been using them and leaving their tube amps home, FWIW...