exhaust help

does anyone live in the houston area that has jba or flows 40 i am having a hard time deciding on what exhaust i am leaning toward jba but hearing them on a computer does not tell much...there all loud at wot....but i want to see how loud at a normal take off...i have had magana and flow 40 before and i dont think the magna are loud enough....but from what i read the flows loose a little low end if so how noticable is it...