Most of the higher end camber plates are going to give you good results. When looking for camber plates consider a few dynamics...
1) The hole in the top of the strut tower is relatively small and can limit movement because of the top of the strut shaft (compared to E46 & E36)
2) The addition of CASTER is far better than CAMBER because caster angle adds negative camber as the wheel is turned
3) The lower arms (suspension components) can be upgraded to M3 in order to gain more negative camber
4) Most importantly look at the stack height of the camber plate to see how tall it is compared to the OEM Strut mount. It should be considerably shorter in order to gain the most compression travel out of the suspension.