I run both a GT7 and an LRP Quantum pro-sport. I am selling the GT7 'cause I can't stop it glitching in my X-Ray. I've even recently changed radio's from a JR XS3 to a KO Mars thinking that might be the problem, but to no avail.
For me LRP = No glitch, GT7 = glitching. I can't pick any other difference. Oh, and the LRP is smaller.
Craig H