unbelievable!
I dont think a mod should lock this thread, everyone is entitled to an honest opinion on there feelings, be it Fred, Jesus or whoever, i dont know any of these personally but read with interest their posts.
At the end of the day if Fred or whoever wanted to "poach" another potential sale or whatever he could PM the person instead of posting on an open forum, did you think about that? He openly mentions the fact that there are other options. I think that is fair enough, also Jesus i value and respect your comments and I am not siding with anyone.
Back on topic.
Tuning to me is a matter of preference and what you want to achieve, I think putting £1000's into an engine IE: a KTEC/BBR turbo conversion is stupid, these can cost £6000 ish. A 1.8t VAG unit can be had for around £1000 / £1500 ish i believe with already forged internals so should be good for around 400bhp.
Getting a company to have that unit fitted into the MK2 shell shouldnt be a problem, im not sure of prices as im not a tuner but lets say you pay someone £3000 to fit it, you have paid about £4000 for a 1.8 turbo conversion with the easy potential of 400 + bhp and also probably recouped £1000 for your old 172 engine, so £3000 for that option instead of £6000 for a conversion on an engine that wasnt designed to take a turbo in the first place...
This is just my view, im not a tuner and have no wish to get into an arguement with any of them on here as i dont know much about professional tuning but im sure with the example ive given someone will put me right.
Tuning your original engine like I myself have done is okay until you start paying £1000's for a 20bhp gain say.
Ring all the companies mentioned and others, get a feel for the people you speak to, their advice, prices, turn around time and after service then go with which one you feel comfortable with.
good luck
end of chat.