hi ive a remtec 1600 sp its got 2 year guarantee with it so thats why ive opted for it , done about 5500 miles since april including 3443 euro trip and i use it every day too without any problems, i am a bit anal about getting it set up right though ie regular checks of mixture and timing and regular oil changing and servicing as per remtec recommends , .......... so for me its remtec , but ive heard excellent reports about the TES shop too as long as you have a guarantee i wouldnt worry too much
regards
chris