Hehe... dude, I'm 16 years old! I still don't have my license, so I can't tell you about my personal experience But today's your lucky day. I know a bit about them and I can tell you some facts. At first you can have a look at their website: http://www.mps-engineering.de/
If you're really interested you can give them a call. But I don't know whether they can speak English or not. All I can say is that they are pretty known and successfully and that I have never heard of anyone who was disappointed by there work.
Maybe anyone here has experience with them. I don't know :S
Cheers for the link buddy I speak a bit of German, but I just can't write it :S