Many prior topics on this -- please search in the Driving Dynamics subforum.
I went with Eibach Pro-Kits on my P3D+. They work great for visual effect, although from pics I think H&Rs produce the best aesthetic (don't know about ride quality, etc.). My understanding is that TS sportlines are actually made by Eibach, but there might be slight differences than the Pro-Kits. Unplugged has several options and had some issues with squeaking, etc. early on, but I think they have since resolved.
If I did it again, and wanted just lowering springs rather than adjustable matched coilovers, I think I'd go with H&R. However, I am happy with the Eibachs.