I've been reading for days trying to choose an MES that won't be a poor reliability investment. I've been smoking for about a year on my Weber propane grill that I temporarily convert. I'd like something more set-and-forget and something dedicated for smoking. I'm convinced 30" is about the right size for me. And I like MES because it's available at Amazon. But it appears as if most electric units have reliability issues. I don't want to purchase something that I have to modify to keep functional. And the fact that Masterbuilt only offers a 90-day warranty is concerning. Recommendations here suggest that the 1st gen is better than the 2nd gen; but I don't know how to distinguish the two. Is 1st gen being sold alongside the 2nd gen units? Please help me choose a model that won't disappoint. I did like the 20070312. Thanks!