Edited my reply because I just realized you were looking at the Quick CX 4, not the non-CX models. Both the muirwoods and CX are great bikes. The Muirwoods feels a lot longer than the CX and it's heavier, but it's also better spec'd.
For the muirwoods, I (personally) would favor the 2013 over the 2014 model, especially if you can get a 2013 at a discount. I'd still get the 2013 instead of the 2014 even w/o a discount, but that's just me. The muirwoods is an awesome bike, I've always been a big fan of the line. I've ridden the 2013 many times, you might be able to get away with the tires already on the bike.
The Quick CX 4 is a nice bike too, I've ridden one and was amazed at how light it felt. I also liked the geometry and the shorter top tube on the CX. I was a lot easier on my neck and shoulders.
This is going to come down to fit. Ride them both and decide. You can't go wrong with either. For me, the CX 4 was a better fit, but I prefer the color scheme and components on the muirwoods.
Last edited by teicher; 08-25-13 at 05:52 PM.