best ones...can be very subjective. Being that i have had both coils and springs/struts on the same car (my 03 elantra) I much prefer the spring/strut combo...though i must say that I matched up the shocks to the spring, so travel and dampening are correct (to the best I could do)
the coils will give you flexibility...but how often are you going to be raising and lowering the car?? and every time you do that you will need to redo the alignment. Coils are going to be much stiffer then nornal drop springs, I know that on my XD if I was on a crap road the ride was down right harsh! though on a nice smooth road or up on the highway...it was like a rock. Did not matter how much the wind was blowing or how you took a corner, it was planted. Its a nice feeling.
spring strut combo will give you a better ride, but they are fixed. There are only a handful of times that I wished i had my coils, but majority of the time, I prefer the spring/strut combo...its just easier in the long run.