If you don't care about offset too much or simply have spacers in hand, I'd go for the Kosei K1. They come as 7.50kg each, which is quiet amazing to be honest and pretty much make sense now why all E36 track guys use them.
I've got Ren's wheels, for those who remember black with a yellow strip, Mim's 16x8J and surprisingly they are kinda heavy coming at 9.5kg each. Of course the price difference in super light weight wheels is big, but choice for dish, offset, and most importantly styling, is not so much available.