I was lucky in that JKM are less than 15 mins away. This means all my support/servicing/repairs and tuning is in one place.
I have a Revo stage 2 map which may err on the conservative side compared to others but I've never had any issues after numerous track days and considerable time since the work was carried out. No, it's not a custom map but Revo have left safe margins in place which serve to protect hardware. I'm comfortable with that.
It's important/useful to find someone you trust and having a one stop solution from someone like JKM can potentially save many headaches. Their advice in hardware, tuning and handling has always been spot on.
I'm sure there are other garages like them; they actively explore options and developments for the VAG group cars, their own development work is very interesting. More recently the Syvecs ECU upgrade the Octavia has has re-writes the rule book for 500+ bhp FWD cars.
They're here this weekend: http://www.beachbuggin.co.uk/
20% of Revo maps available during the show 
Also had some track tuition from Jim at Goodwood which was money well spent 
Your lucky to have a Revo dealer that are also competent in suspension mods too. There's only a handful of well recommended specialists on here (JKM, AKS etc)
Revo is more conservative than Superchips, that's for sure - superchips think its acceptable to ask for 110% duty from the turbo
Revo is an aggressive map in its delivery with the huge torque hit upon turbo spool and boosting hard through the turbo's surge zone, although to a lesser degree than Superchips. . .
I think all tuners leave the safe margins in terms of fuelling & boost - it's huge torque spikes that bend rods, I know that are Revo don't push as hard as APR, the v3.4 map has caused a few issues on customers cars. R-tech make power with as little boost as possible, focusing on using the engines VVT to spool the turbo rather than just dumping boost, that's why R-Tech's graphs show more mid-range than some competitors.
It's a shame Revo haven't advertised themselves well on the R-OC, as APR are apprearing as the more popular brand.
