I'm gonna give this one a serious go, it seems one of the most promising ones. Support is good, payments are being made, the forum is nice and so on and so on....
My offer:
Everytime I get my 5% referral commission paid into my E-gold (this will be at the latest the saturday following an expiry of my own upgrade) you get immediately
95% of this amount when your upgrade is < 50$ (<20 units)
100% of this amount when your upgrade is > 50$ (>20 units)