I see there was an American made RC introduced at NEAF in the same price range. It does have the features I was mentioning. Field flattener for large CCDs, moving secondary focuser, secondary heater, etc. Optics by Star Instruments so you know the quality will be there. Only in 10" size with 14" coming. Price is $5000 without corrector and $6000 with. Though the instrument controller at $300 is a necessary addition so raise those by $300. Not covered is how well it holds collimation and ease of collimation. Only user reports will likely cover this.
http://www.deepskyinstruments.com/products.htm

Rick