I did not know there was a race version of the '11 250F with a '10 motor!
Both yamaha 250F motors are the same dry sump design, in '07 they had to go to an oil tank as the alloy frame is not a resevoir. The differences I know of for sure are slighter tighter trans ratios, lighter flywheel, cam timing, and ignition. I've ridden both '03 and '07, but bikes were in different state of tune, so hard to compare.
I'm pretty sure I'm adding a new, smaller bike sometime next spring. I'll spend the winter thinking about it but either a 125 Race, 200 Race, or 250F/250F Race. I would imagine the standard 250F has the corked up GG muffler. The '10 250Fs that recently showed up had the FMF stuff right? So they were basically '10 standard models with the FMF exhaust? Either way the 250F option looks like it could get expensive.
Any idea of the spring rates for the bikes I mentioned?