Moo Cards
The set of photos I used for my first Moo mini-business card set.
Some turned out better than others - the cards are physically good quality, but contrast and saturation seem to really drop off in the process, and the cropping of the bleed (while anticipated) was noticeably (glaringly?) asymmetric in some cases.
Moo suggest a ratio of 1:2.1 (or so) which limits the kinds of things you can squeeze into the frame and still make some kind of sense.
And keep in mind that these cards are printed at 70mm x 28mm ... which disguises quite nicely any artefacts that you may be seeing on your 68cm monitor.