Ok, I am still trying to decide if I want to swap out my FRPP M-5230-GTA's for the SVT's or SGT's. My big concern is that I will end up with a muffler that drones. I have heard that the SVT1's are allot like the GTA's and that they don't drone, but what about the SGT's? I like the idea of something maybe a little more aggressive than my GTA's but I don't want something that will drone and just wind up annoying me. Any honest/accurate info would help. Thanks.