Well, my MP5 has a 350fps with .2's and a range of about 220ft straight shot. Not so sure a more expensive gun is gonna make that any better in a game where it's considered proper to use 400fps or less. So if it's a cost issue, and those other guns do better in range, then maybe. But Iv'e yet to see an automatic go much further. I'm rarely shooting at people beyond 200ft in the wooded area's we play in. So I'd accept 300ft or more to be the exception, if I needed it to compete.
(Edit: Don't care to replace the clear receiver if I don't need to.)
Save your trolling for someone who thinks you matter.