Happy to help..... you'll need to PM me your email address. Read up on Replicated Setup..... it works very well, and lets you clone my settings but if you save yours first you can always go right back to them.
I have both W7Pro64 and W10Pro64 running under the X5690.... there now are multiple of these builds, and the W3690 will be virtually as fast. With eBay it is all supply and demand for cost now. I've seen each one be more expensive than the other depending on market whims.
I think it was Bambi or Brian in a very recent post (very experienced guys, both) post about best performance from more speed vs more cores mention that many of the programs we use benefit more from raw speed than number of cores.
What Jim is going throught righ now with his W3690 is not an indicator that it is a bad processor to use versus the X5690. It is another issue that we need to figure out.