For just decent prints of snapshot quality - DSC, Photobox, and doubtless many others. I suspect that they're much of a muchness, generally, since they're likely to use similar machines to dev / scan / print.
It depends what your quality criteria are. Try a few labs & compare 'em. Study the results and draw your own conclusions.
If you want exhibition quality (more control), open your wallet a bit wider.
Within all that, there's no substitute for discipline and care at the user end. No purses from sow's ears.