I have now balanced and installed the Graupner 10x5 e-props. They do work quite well, I must say.
I still think the GWS 9x5x3s, when you get straight ones (
), are probably just a little smoother, but these are a ton smoother than the stock props, and they are pretty closely balanced, out-of-the-box.
As Andrey says, I should have these up on my new website by the end of the week. Shipping won't happen until next week, however, as I'm waiting on a servo shipment, which won't be in until then.