The 8" RC and FSQ106 are completely different, one is wide field, one is more narrow field etc etc....
If you were asking which would be the higher quality instrument, the FSQ would win hands down... I've not personally seen the 8" RC, but lets face it... you were seriously asking what wins, GSO or Takahashi...
Garyh is right, $2800 on a custom built 10" F/3 corrected newt would provide a much better imaging platform than an 8" F/8...
All this being said.... I'm very interested to see preliminary pics and reviews of the 8" RC... Might be an addition to my gear list in the future... (providing I dont win lotto as planned and buy a 16" RCOS first!)