I currently run 3 degrees of camber with plates and stock control arms. Tops are slotted as well slightly. I do want to move to adjustable control arms though - but I can't see spending near $1000 on GT3 arms - additional money on shims and then extra if I want to remove the rubber centers and ends - not to mention the fact that the ball joints aren't rebuildable.
In looking at all the options - I'd probably opt for Elephant racing's adjustable arms. Yes they are more expensive at $1190 a set - but fully rebuildable - offer infinite adjustment without shims and have boots over the bearings and ball joints. Do most go GT3 arms because spec boxster rules only allow them?