Your friends bought crappy springs.
In reality it depends on what you're looking for. If you really want a big drop ( more than an inch) then IMO springs arent the best choice. There just isn't enough travel for that and a good ride.
But if you're happy with a more mild/medium drop of an inch or less, than you can get a good look without ruining ride and handling. There are a couple good springs out there for this chassis.
- Andy