I was going to start upgrading my ASR and was looking at different pistons, spring guides, etc... my main question is what is the difference between the echo 1 Asr upgrade kit and higher quality laylax/pdi parts? Also will there be a consistency, range, fps, and sound difference? I wouldn't mind putting more money into better parts but would rather not if there isn't going to be a notable increase in performance between the two options.
