Looking to get into tubes to compliment my HD650s. Currently have an original master amp and it's ok but a tube amp seems really appealing. I have a budget of around $300-$350. I could go with Crack (no speedball) or a MKIII. I'm leaning towards the Crack but the apparent lag time in shipping the kits out is a little off putting, I'm more of an instant gratification type
If I went with the MKIII I'd have a little left over for some tube rolling but the crack seems to be the more revered amp from what I'm reading.
I have no immediate plans to upgrade headphones, so I only need to consider performance with the 650s. Any insight or other amps I should consider in my range?