headache.... sometimes, but its worth it
the ride is the best by far that I've had. I have been on eibach springs/stock shocks, Raceland coilovers, and now these. I have been in some cars with other types of coilovers and my advice to anyone would be to spend the money upfront like i didn't do (hence the raceland coils) and go for quality from the start. The ride is firm yes, but also very smooth on the highway and for long hauls. Overall excellent ride for the lowering capability.
as far as installation, I did that myself so I couldn't tell you. I'd say it took me about 5 hours with hand tools/floor jack. but adjusting it to exactly how you want, some would argue is an never-ending obsession.