I got a basic digital Gen1 MES 30 (20070910) from
Amazon for $140 a few weeks ago. It's my first smoker, but I'm liking it so far. Some people report trouble with the controllers, others seem to be fine.
Mods don't seem *required*. It's not a mod, per se, but a lot of people (myself included) use the
AMNPS pellet tray, ~$30. It can give 10-11 hours of nice smoke, vs reloading chips into the unit roughly hourly, with the included chip tray. The
AMNPS also gives consistent smoke regardless of set temperature, whereas the normal chip tray smokes less at cooler setpoints.
I got a 4-year warranty for mine for $18 from
Amazon. I am starting to wonder if that was worth it, if the controller failed, I could add a PID controller for somewhere around $50, and get more consistent temps (and I don't mind some DIY). But the warranty was cheap, and a 2-year was about $10.
There are units that get much better feedback, like the Smokin-Its. But those are priced accordingly. And for my current "needs" (just getting started), my preference was lower cost, and dealing with the risk of a failure. If it no longer did what I wanted, or failed, I'd have a better understand of what aspects are important to me, when shopping for a replacement.
It's just my wife and I, so the 30" size seems plenty to me so far. It has 4 shelves, I've only had stuff on 2 of them so far. If feeding bigger groups, of course, the 40" might be a no-brainer.
PS- The Lowe's site has an MES30 for $161, model 20077915. From pictures I found, I believe this is a "Gen2" unit. Those seem to have a worse reputation than
Masterbuilt's Gen1 or Gen2.5 units. But it does show a vent on the top surface of the smoker, on the left, so it might be a later Gen2. The earlier Gen2's had the vent on the left-hand wall, near the top, I think. Just FWIW.