Have you noticed that the guys who are knocking the Logitechs are the ones who haven't tried them? It was long thought that the earth was flat until somebody decided to check it out a little further.
I have two of the finest powered speakers available, the Barbetta Sona 32Cs, yet for many of the small jobs I used the Logitech Z2200. If I don't sound good, I don't work, and my family has to move out of our home on the golf course, and the kids have to drop out of school and get jobs. . . well perhaps that's stretching it, but you get the idea. I don't have to use the Logitechs because I can't afford anything better. Neither does Gary or any of the guys who use them.
They are certainly not suitable for many large jobs, or for a 5-piece band, but that are great for certain circumstances.
DonM