Atspeed are good, but are only interested in doing the big money standalone stuff. Redline in Basildon are great, I use a daztek unichip version 4 and have had great results (323bhp on a gt28), they fitted and mapped it and the cars been bang on. Whole setup with mapping and fitting cost me just shy of 700 pounds. I think they could have done the same but using emerald standalone for 1250. Steven Windett also has used them in the past, the main mapper in there races starlets in his spare time (barnaby), so he loves in when they come in the door. Track and road and good, but have a bad attitude towards customers (can't be bothered) Do not use AMD or TDI South