i think Don also hones for straightrazordesigns, but may be he can confirm.
the only way to know for sure is to just ask the vendor.

i cannot comment on the quality of the honing, and I suspect mostly anybody can't. to do so meaningfully would require that one purchases the same several razors from different vendors and compare them, and I don't know anybody who would do that.

if i were you, i would not worry about this at all. just pick one and in the almost negligible chance that your razor isn't well honed, i believe any vendor will take it back and fix it.