I use DS Colour Labs and have been very happy with results up to 20x16 (haven’t got them to print anything bigger but I’m sure it would be just as good)
As CanonCameraFan - Follow the instructions carefully to prepare your prints - and download their colour profile
I think their prices are very good except for canvas
PS my local Snappy Snaps does a very good job of film scanning, may be I'm lucky the guy is good!
