Just an update guys, I lowered mine with H&R, front and rear, and I like it. It is stiffer for sure, bit harsher than the OEM PP springs. But I like it. The stance looks so good and the wheels I have on it, look great to me. Highly recommend the springs.
I cannot give a 100% true review on the comparison between the OEM springs and the H&R, because I had my 18 inch steelies with winter tires on, when I went to H&R with summer tires. In other words, it has been few months last time I drove on the summer tires on the PP springs. And the 18 inch rubber absorbed a lot of more noise and bumps due to high sidewall. But, as other forum members mentioned before, H&R way is stiffer, not too much, but not bad at all.
The install went smooth, rear took about 25 min. and front a bit longer due to compressing of the spring. I had it aligned, did not use the camber bolt (I do have it, but I decided not mess with it at this point, as it did not seem bad when looking at it from behind. Plus, taking turns, should be more stable, grip wise. I will install them if I notice any abnormal tire wear, but I highly doubt it.) and it drives smooth. There are no clicks, creaks, or any other strange noises. Even over the speed road bumps, it is quiet and smooth.
I will say one thing though, the continental DW, 275/40/20, are so much quieter than the F1s.
I am in a rush, so I might be missing some things, but I will update if any changes come along.
And of course, the pics...I have one so far, but over my phone it never uploads, hmm..