its a race...
I more or less am doing the same thing. I ordered from OWC on tuesday which was apparently a bit too late for the oh so popular 2gb dimms. So I've ordered 2x2gb from OWC and 2x2 from RAMJET for 269. Unlike OWC they only have one type. I've heard ok things about them back in the day, which was a tuesday... I'll probably cancel the other one once i get a shipment notification. In the case that they both ship would it be ok to mix that many kinds of RAM?
2x1gb apple
2x2gb OWC qualified
2x2gb RAMJET
Will it make a difference if I had all the same RAM from one vendor?