TTI exhaust, is it worth it??

So i've been looking into exhaust systems for when i get around to doing my /6 to V8 swap and i've looked at a lot of options. I've heard lots of good things about TTI systems but they're kinda on the expensive side at $616 for the 2.5 x pipe header back system. Then i'm looking through summit's catalog and see that right now their system for a 74 valiant is on sale for $188. It's a 2.5 no x pipe but what ever, super turbo mufflers and it makes me think whether it's worth while buying the $616 TTI system. So whats your opinions, are the summit systems ok?? Are the tti systems really worth it?? I know that i definatly don't have the money for TTI headers so that's out of the question, i plan on getting hooker comps. which is also what the summit system was designed to work with. Thanks all!!