I fish out of a Redfish 14 and I really like it. I'm about 5'8, 165lbs and I sre can't stand up for any period of time, I definitely don't feel comfortable enough to cast while standing. I have never paddled the 12' but I would imagine that the 14' tracks better due to the longer length and is more stable due to the 1" added width. If you are fishing lakes and inshore you don't need a short boat for tight manuverability (the 14 isn't too hard to manuver anyway), so I feel that the 14 is an obvious choice here if you have the extra ~$100.