I have the Rec Tec mini, predecessor of the RT-340. There are just two of us at home so thought it would be the perfect size. Got it shortly after Rec Tec came to the market. I’ve only had one issue which was a grease fire, and that was my fault. I've done a lot of long overnight cooks of pork butts and briskets and there have been no issues with running out of pellets. Generally, I find the size adequate but occasionally would like to have something bigger. As an example we have a party coming up and I’m planning on doing several tri-tips. I can only get three on the grate and would like to do four. I guess I could get a shelf for the fourth I hate trying something new for a group. I think if I had it to do over I would get the 590.