The Pro1000 is a good starter progressive machine if you are a tinkerer. If you can load on any Lee progressive, you can load on anything.
I DO NOT prime on press.
The case feeder can be finicky, but it works ok.
If anything hangs up the machine, it can get out of sequence. It is easy to fix if you read the instructions.
Case ejection from the pro1000 is a terrible idea. The little pin has a hard time kicking the cases out and the chute is too small which causes cases to get stuck to the point of interfering with the press' operation.
Although you can't do much with the chute, I made a better ejector out of a piece of sheet metal that worked much better.
If you have a problem with the Pro1000, take all the cases off and check them or run them back thru again AFTER you get the press running correctly again. It is not a press to fix and expect it to run properly immediately. Usually, you will have to clear it, fix it, and then cycle it a few times to check it before running it again.
I think I wore my pro1000 out after more than 15K pistol rounds loaded. The handle and ram feel loose. I still use it to deprime in mass before cleaning, but I dont trust it to load anymore. Which leads you to buying another press!
I should have gone blue, but I didn't.