While I generally prefer quality over quantity, in this matter I would say I prefer Asura because of their consistency. It has been 2 months. And while there are minimal errors in their scans, the more important thing for me is to read the chapters because I really really love this one.
And I don't think it should be considered sniping if it's already been 2 months without updates? Maybe they should've left a note or something. But then again, if you can't deliver consistently even if it's voluntary work, I guess it's inevitable someone else will pick it up.