Good:
The lads @ ASG.
Simon @ GTi. (Tunes for TF as well).
Tony @ TFM. (Can tune Motec - but generally hand balls to Simon).
X-Speed for memory can (and have their own dyno). Although primarily tune Nissans. That said, they do have engine/tuning expertise in house.
**EDIT - Also, I think Joe uses/used a dude called Glen Baker or something?? PM Balistic and ask him regarding feedback. I havent had any dealings with him, but I think Joe said he was good**
Bad:
MMS.
TSWR. (West Racing).
Intune.
NOW, before the workshop band-wagon juggernaut fires into life... This is in relation to MOTEC tuning, and of the above list, I have first hand experience with 4.
Brent.