My friend had a Bluefin on his MK5 Golf GT TDI 4Motion, He really rated and to be fair to Superchips he ended up with about 5-6 different maps from them as they tailored it to suit his needs.
I.E At first it was a bit smokey so they altered the software a few times and sent it back to him FOC.
I would always go for a proper bespoke map myself though, My ED30 will be going to R-Tech for a Stage 1. I have used them twice before on previous cars and have nothing but praise for them.