I drove both models and yes, the SC is a bit more aggressive, but not a whole lot, and the seats are perforated, which I didn't like. I figure this truck is going to be used for cruising around, not drag racing. Spending the extra $13,000 for the SC didn't seem logical - don't we all have better places to put our money? Anyway, I bought the regular HSE with the Lux Int package - the leather is amazing! And what about the 20" SC wheels vs. the 19" HSE wheels? I couldn't tell the difference unless the two were side by side, and even then it was tough to tell the size difference. The only real difference in the wheels is the styling - and I do like the 20" SC style better, and will probably upgrade to them when they become available as an option (dealer told me a couple months). Dynamic Response comes standard on the SC, and is an option on the HSE. I've heard it's a nice option to have if you're going to be cornering fast around a bend - it shifts the weight around and prevents a roll. I'll have to be careful not to make any fast turns. I have to admit the chrome exhaust tips on the SC are really cool looking- the HSE doesn't have those and I might have to see if I can get those custom. Anyway, I love this truck!