Thanks guys.
So some good things said about them already, that's a reassuring start!
I have been given the chance (if all goes to plan) to have a stage 1 Revo remap at a very good price, but the catch is, I can only have it done at R-Tech.
I know it's a little bit of a travel, but I think it would be worth it.
Just looked on their website and noticed their Milltek prices seem quite competitive too.