I used to use hit-japan for awhile, then I sent him one offer (maybe 30% off but it was super overpriced) and he responded "Is this a joke?" and I was like f*ck that dude I will take my business elsewhere. DragonmasterDan has an even more epic story than I about him I believe.
Anyway, after that I used Yamatoku for awhile, but at this point I'm more likely to just buy stuff from Japan using a proxy anymore.