Jebus I hate these ****in threads .....matey there all on a par , not one of them is better than the other and to say otherwise is purely down to opinion and not fact ..try them all and pick which one you like best ,they are all high end fast as fook and as light as Revolts brain
They are all great, its all down to personal preference. If you can, get down to some training sessions or tournaments and have a look around. If you ask someone with one Im sure they would let you have a shoot.
DM6: NO kickback, very smooth, one of the nicest guns I have shot however, they are much more complicated to maintain, and not too good in cold weather.