Just wondering everyones thoughts on the ceramic bearings availible for the Zenoah?

Are they worht the extra $$$$ over the stockers :?

Longivity?
Rpm Gain?
No Rust?
Less Drag?

Seems like they would be a benifit?

I am thinking of buying some.... I figured I would post here to get some input.

I know Carlo of CC engines sells them and I talked to Bruce of Gizmo and he may also begin stocking the ceramics!

Rcer