Well I have to say that I still don't know since the delta is on it's way here. I belive the platinum has one advantage over the delta, the ground balance.
On the delta it is fixed on the platinum it is adjustable.
I love the platinum and I wouldn't sell it if I didn't need to. Will be probably selling the delta as well.
Anyway I think they are very good machines and one thing I DO know on the platinum is that it is a killer on coins. I mean you can tell when there is a coin down there 90% of the time. Once you learn the machine it will be great.