Question about true duals

Ok...I'm now planning my exhaust setup and I want to figure what I'm going with and how much it's gonna cost me so I can figure out how soon I can afford it. I've pretty much decided on Pacesetter LT's, and was going to go with a Borla Adj. CB, but now I'm considering true duals. I like the Texas Speed/Sweetthunder setup and the spiral flow's. But, I don't want alot of drone or too much noise at interstate cruising speeds.... Does that rule out true duals? I would assume if I were to not dump the exhaust, but run it out the back, it would help some, but would it be unbearable inside the car while cruising at 70-80mph? I travel alot and am on the phone for work while doing so and it would be nice if I could hear what the other person was saying.:D Any insight is appreciated. I just want a nice, deep toned exhaust!

http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoID=1125684718

lt1, mods in sig.

ignore the slipping tranny.

with bullets you'll probably be disappointed.

if you put some better mufflers on it you should be happy..

i'm running 3" duals on my cammed LS1, dumped with magnaflow 4x9 mufflers.

on the highway you only have to raise your voice a small amount to have a conversation. i honestly don't think it's bad at all.