On my 4.4 I went with B6's and H&R springs, I replaced everything in the front that was suspension related and also replaced the airbags in the rear. The ride is stiffer, but to me not uncomfortably stiffer. On my 4.6 I went with BC coilovers. I would say that the ride is comparable to how my 4.4 rides currently and the reason I went with coilovers on the 4.6 is I was disappointed in the ride height with the B6's and H&r's. I know that lowered the vehicle but its minimal at best and the coilovers allowed me to get the look I was wanting. I know that BC gets alot of hate but I run them on my e38/9/53 and my e60 and have been very pleased.