HD's and sports are valved pretty much the same. The only difference between the two is that the sports are designed for cars that have been lowered.

If you like as sporty ride, go with HD's. If you want something a little more comfortable, go with the comforts (aptly named!). Don't get the sports unless your car is lowered. That's what I have on my car, and it feels pretty close to stock (obviously a bit more stiff, but I'm not sure if the cause is the springs or the shocks).