I have a 2011 Roam 1 and a 2017 Roam 3. They are equiped pretty much the same as far as drivetrain, brakes, and fork go. I ride the 2017 Roam 3 most of the time due to the fact that it is a medium frame. I gave the 2011 Roam 1 to my son since it is a small frame and didn't fit me well at all.

I'm 5'9" and the Medium fits me best. My buddy who is 5'10" has a 2017 Roam 3 in Large and that has me way too stretched out. It doesn't really fit him well either but he is too stubborn to admit it... The small is very tight for me and I feel cramped on it. I can't imagine someone who is 6'0" riding anything smaller than a Large unless they are all legs (short torso and arms).

If it were my decision (with my current experience), I would definitely go for the 2015 Roam 3 in Large. Fit is more important than equipment and even condition to some extent (in my opinion). Save the $ and ride the heck out of it - $200 is a fair price. I think $350 is very high for the 2012 - I paid $210 for my mint 2011 a year ago. Upgrade and/or repair components as necessary.

Chances are you will want to upgrade the whole bike or branch out to other types of bikes down the road anyway if you get the bug (I now have Road Bikes, Mountain Bikes, and Beach Cruisers in addition to the Roams, all great for their intended purpose). These two Roams are both solid bikes - spend less now and determine if you really love riding.