It's interesting, people on the forums frequently say "h-pipes sound deeper and more muscular than x-pipes". That's just the generally accepted rule on the forums. But to me, those two videos do sound a bit truckish to me. Granted, that could just be due to the fact that I'm used to the offroad X and GT500 mufflers on my car, but compared to my car, those do sound a bit unrefined to me.
I chose an offroad x for the power and GT500 muffs to avoid drone. Here's what mine sounds like: