I think the ride comfort remained the same. I had 5 people in the car and I was going about 85 MPH and the ride was perfect.
However I did not drop my car too low. I think I lowered front about 2 inches and rear about 1+ inches. (I am running 19x8.5 - 255x35 & 19x10 - 285x30).
Here are couple pictures.
I actually had to bring the rear back up about 1/2 of inch, because I was getting bad camber wear and there was no more room to adjust it.
The ride comfort will depend on how low you are going to drop your car. The lower the car, the less comfort you'll have. Plus I've noticed that if the car too low, tires wear out pretty fast. This is one of those things that you have to play around with before you get it the way you like it. Just keep in mind, every time you adjust the height, you need to re-align the car.