well i paid $1300 for my set....installed them myself...
and an extra of $75 for wheel alignment and a small camber setting...

personally i have only tried the BC and cusco zero 1 i think(not sure)

...i find the BC better than the cusco... not sure about SS or N+

but if you have the money...then go for TEIN or Buddyclub for that extra peace of mind...