I was looking at the MEC Col for a road bike..they had it on sale and the 105 shifters appealed to me. It seems that they are low on stock and I'm not sure if that means they're getting out of the bike business or if they're just out of 2011 stock. I'd check availability before making any purchase plans.
Having said that, I think the MEC bikes are pretty much just Taiwan-spec off-the-shelf stuff with some fair pricing, especially if they discount . The geometry is always most important to me frankly and the Col was not that great for me. On the Lynx, the fork is nice and the components aren't bad..the frame is not as good. I wouldn't expect awesome integration with MEC though, they're not bicycle experts to be honest. The Devinci that FMJ is not a bad buy..I've been fond of Rocky Mountain over the years..their Blizzard 30th is probably my favourite bike at the moment..steel is real!
The Rocky Mountain Fusion is a good buy.
I think you really need to assess the fit and the geometry for yourself. And good assembly and service is important. I generally disassemble all my bikes and redo them properly..hubs are generally pathetic and the wheel builds are not great. I can't comment on MEC's competence in assembly or service unfortunately.
FYI, I've had the chance to try the SRAM stuff lately and it's not bad. I hope Grip-Shift is buried forever...