I bought a Rectec 590 in spring of 2020 and have been using it heavily since then. In terms of bang for the buck, this is a really good cooker. Considering I paid less than $1000 I am really happy with it. It is made from cheap Chinese materials but is holding up okay. Still works fine. Just not nearly as pretty as it was when I bought it. The stainless they use isn't the best quality. The drip pan is really thin, cheap material and is sagging a bit, leading to pooling of grease. But it still works very well and problem free. Any time I had to deal with their customer service I came away happy.
Flavor can be a bit subjective. I bought this grill because I wanted a clean smoke profile. That is my preference. On shorter cooks like ribs, the RT is perfect in my opinion. It really shines cooking ribs. On larger cuts like briskets or pork butts, you can be lacking in smoke if you try to cook with the same time and temperature techniques you would with a stick burner. I have found best results cooking overnight just below 200 degrees, then cranking up as needed in the morning. Plenty smoke in my opinion. But fast cooks will leave you wanting.
The convenience of pellet cooking works for me. I much prefer the flavor to charcoal smokers, but that is my taste. I still think stick burners produce a superior product but I simply do not have time tending a smoker. Just too busy.
If I had to do it all over again and my budget was about the same, I would spend a little more and go with the RT700. My brother in law has one and it seems to be a little more stout in materials and construction.
I am actually in the market for a new smoker. My wife and I are about to knock down our detached garage and replace it with a new building with an indoor kitchen that leads to an outdoor bar and covered grilling area on one side and a pool on the other. It is going to be sweet. I want to treat myself with a new smoker and want to retire the RT to the farm. Looking hard at the LSG pellet cooker. Love the design for sure. Chris does some excellent work and have been wanting to own one of their grills for a long time.