I too have been gearing up to buy an RP. I have a Revo mill on Matrix and have been using it for about 4 years. It is superb, but I HAVE to get an RP. They do things a mill just can't. I have researched them quite extensively, and have come to the conclusion I would buy the Solidscape machine. I have had models grown on one, and they reproduced with excellent resolution, and the material cast beautifully without any alterations to my regular investment / burnout proceedures. I think the R66, at about $35,000 was my ticket. It doesn't have the speed of the T66, but that wasn't an issue with me. I am just waiting for the dollar to get a bit better now as I am in Canada, and exchange effectes the price quite a bit.