I have a four year old 30" MES. I really like it, and it is certainly big enough for me. It has one serious problem -- the connections to the heating element get corroded and come loose. It is a bear to repair, mostly because there is no easy access. There are other extensive threads here discussing that problem.
A friend just bought a new MES from Amazon about a month ago. It cost him $169 with free shipping, but current price seems to be a good bit higher. His unit has an access panel on the rear to reach the connections for when (not if) they go bad. VERY good improvement.
I was in Bass Pro shops this week and noticed that they had some models with the access panel, and some without -- so be careful and make sure you get with a panel, if you decide on MES.