R-Tech for the following reasons...
1. You will struggle to find a bad word about them, I searched to a tuner for months and nothing but good words about R-Tech.
2. At the time I got my car mapped by them they were ATLEAST £300 cheaper than AMD who are 5 mins from where I live and have nowhere near the reputation on forums etc that R-Tech have.
3. Niki is a genius, simple as, I have him on facebook and everyday he's mapping cars and producing amazing figures, he wont take your money and map your car dangerously, it will all be well within its limits and will provide nothing but 1st class aftersales if you do have a problem.
4. The drive home to wherever you live will be epic, trust me, been there done that got the t-shirt!
All in all you cant go wrong with R-Tech, the guys know their stuff!! Only problem you might have is getting a booking soon, from what I've seen on Facebook, he's busy! and rightly so! I cant wait to go back to him for stage 2!