We won an iPod at the weekend from one of the machines in the Trocadero, London and nearly snagged two more. The machine said 'true skill game' and we agreed.
However, the same machine at Namcos on the Thames behaved extremely differently to the point we assumed the units were glued down. Couldn't even move them with the crane.
In any case if you're in the UK the machines in Troc seem fare if you fancy a couple of iPods.
Also the Troc only had one retro machine to speak of which you could choose from several classics. It was in an old Naomi style cab. No spinner - but Arkanoid was on there. Ho hum
Also played Let's Go Jungle for first time after reading about it on here a while ago. It's good fun if a bit on the rails hold down button hope for best.
the Troc is still worth a visit tho imo, Namco's less so, though they do have an EM shotting gallery thing that I hadn't seen the like of for a LONG time.
Cheers