Most brands have the odd lemon in their range. TM pistols are always considered a safe bet, but then the 1911's are a bit rubbish and the original M9's were bad.
TM make generally good stuff, but as mentioned everyone else has pretty much caught up.
I have the 2011-1911, been pretty solid to date and out performs others, the other week when it was cold, my pistols were the only pistols working when others would get 2 or 3 shots and the gas is done, mine kept on firing fine.
People again with this FPS thing, it is a fixed energy rating. DO THE MATH....
A 0.2g BB fired at 320 feet per second is travelling at 218 miles an hour. (just to bring the FPS in to a realm that most of us understand)
SO why do you need to go faster? These are SAFETY LIMITS that are imposed by government and the sites in turn may have their specific rules and limits like the site my son likes out of all the ones he goes to is now weighing BB's to stop people subbing higher weight than was chronograph with.
ITS A SPORT AND GAME and it seems to me that the idea most people have is to want to have higher FPS to just hurt people as that is all that higher FPS does, hurt more, so maybe you're not suited to the sport...
All I can see in the future is airsoft will go the same way as guns and having to have proper background checks and regulations that will just stifle the sport and all because some want to push their luck.
Increasing the power can land you in trouble, serious trouble in the UK as the laws are ON THE power and not FPS because FPS is the combination of the mass and the power, the FPS is variable based on how you select your load. SO you have a limited scope to work with, if you want to play with the law, remember that as soon as you break the JOULES LEGAL LIMIT it became an actual firearms offence, just possessing it is an offence and your choice if you want to play with the law like that. Its not the VCRA that airsoft is governed by, its also HSE and Firearms laws and Police and Crime act and several other laws that will be lurking in the wings.
Summary is this...
WORK WITH WHAT YOU GOT BY DOING THE MATH.