I ride a Blur TR, but in the previous (VPP) itteration. I LOVE it!
It may be a body proportion issue, but I find that I can ride a L spec, but in SC I need an XL, so I’d make sure to do your best to at least do a test ride on an epic in a L and M.
Admittedly, I’m not a fan of the big red “S”. Warranty and aftermarket support may not be an issue for you, depending on how long you keep your bikes, but SC’s warranty and the free pivot bearings for life keep me coming back.
You can’t really go wrong either way as long as the bike fits you.