As you see, a lot of us recommend Solo, not just because it's highly regarded by several of us but also because they offer different combination in order to help you achieve (or tailor) the sound level you want. Having said that, SB is absolutely correct, there's no way video sound clips are going to be able for you to know absolutely. Hearing different systems in person (along w/being in the car while it's s driving) is going to be the only way to know what system sounds right for you. Along with knowing if the car is an auto or manual, because autos shifts w/the computer tells them to shift, manuals shift when the driver does and directly impacts the sound of the exhaust system while driving.
Kind of goes to the V8 vs 2.0 debate, because while a few of us think a V8 conversion is the be all and end all, others know that 2.0 can be built to perform just as well. Which means its probably more a sound (or nostalgia) thing than a performance thing.