A turret press is a half step between a single stage, and a progressive, making it a compromise design. If you're out to get the most cost effective press setup, or to make it fit in the smallest possible workspace, then it's ideal. Most other criteria are better met by a single stage, or a progressive, or having both.
I think most of the people out to buy a turret are seeking cost efficiency above all else, and if that's the market you are in, Lee is pretty tough competition. For what it costs, it's pretty tough to beat Lee's turret, it's a pretty optimized balance between cost and quality.