I only use Progress when I have the choice, but that's because out of all the supply houses I shop at, most of them carry Progress. Makes sourcing the whole lighting package easy, since I have several places I can pull from. I have used Halo and Juno when they're spec'd. and don't have any complaints about them particularly. Just a Fords vs. Chevy vs. Dodge type of thing. It all depends on what you got used to over the years. I happen to think that Progress makes the "sturdiest" old work cans. They have a pretty neat bar thing that really holds good. Works fantastic on thick old plaster ceilings. Some old work cans will only work on 1/2 and 5/8 drywall, which isn't that helpful to me.