I apply the moving parts test. If a Lee Product has only a couple of moving parts, it's likely to work as well as anyone else's. Maybe better, because Richard Lee was a brilliant designer. If it has a lot of moving parts, it's best avoided. I got so frustrated at a Pro 1000 that I converted it to a simple turret press. Like it fine as a turret press.
Pistol shooters owe Lee a huge debt of gratitude. Lee got carbide dies within everyone's reach. His first carbide dies sold for less than other makers's steel dies and for less than half of the other carbide dies He forced the price for everyone down within reason. Lee also introduced the hollow expander ball and the expander operated powder measure.
I especially like Lee's bits and pieces. The chamfering tool, the pocket cleaner, the case trimer, the universal decapping die and the universal flaring tool are all innovative, inexpensive, and do their job flawlessly. The AutoPrime has been a standard for reloading since it was introduced, even for people who won't own any other Lee gear. I prefer the press mounted AutoPrime II, but that hasn't caught on to the same degree.
Lee has done more than any man alive to revitalize bullet casting. While the one and two cavity moulds have a deservedly poor reputation, they will turn out decent bullets and last a reasonable time if kept properly lubed. The six cavity blocks are fully as good as similar blocks costing three times as much. Liquid Alox and the Lee Sizers made it possible to do without an expensive and cranky lubrisizer.
There's been some junk, too. The early AutoDisk measures were pretty bad. The new Pro Model is quite decent. The priming system on the Pro1000 is near criminal. Best that can be said about the shotgun Loadall is that it is better than nothing. I ain't sure that I would say even that about the progressive shotgun press. The little Reloader C press is about the last thing I would use for loading rifle ammo, but mighty handy for miscellaneous light jobs.
Overall, I'd say that Lee stuff depends on the user. Needs of ten box a year hunter are way different from those of the thousand rounds a month pistol competitor. A reasonably handy man is going to be a lot happier than the mechanical klutz as there is likely to be some fine tuning involved.