I have gotten my basket balls broken for using Lee dies, however, I have yet to experience any problems with them except paying 3-4 times less for them than the leading competitor.
RCBS (...or Redding) is the only manufacturer that makes a couple obscure calibers, to which I do not load.
Lee dies have an exceptionally great warranty and customer service is excellent. I had bent a primer pocket swagging rod (operator error), I called Lee and they didn't replace the rod - they sent me an entire new set, free, including shipping. They also replaced a 7.7 Jap resizing die, no charge. Also replaced a decapping rod I had broke when I didn't lube a 30-06 case and jammed it up in the die and had to hammer it out.
Lee offers deluxe sets, so purchasing multiple dies for one caliber is unnecessary.
Lee dies are easy to set up and use. When working up loads, seating adjustment doesn't require you to find a wrench to loosen nuts.
I have produced very accurate and consistent reloads with Lee. I have a lot of experience with RCBS, as this was my buddy's setup, and just don't see the warrant in price difference vs. performance.
My buddy had claimed after a couple thousand rounds of resizing he had cracked a Lee die, hence he moved over to RCBS - We all have our preferences - but, I would be willing to take any one of my Lee dies and hold it against a grinding wheel in the basement and tell the guy with his Hornady set to "Go ahead, now you're turn."
Once I have a die adjusted to my liking, I put a dot with a marker on the adjustment screw, case body, and lock nut. Lee's pistol dies, as far as all straight wall pistol cases, are carbide and shouldn't require lube. I'm surprised to hear of problems with the .40 There is a special die to remove case "belly's" from Glocked up brass, if that is determined to be of issue. Any die of any brand has the potential to ruin a piece of brass if not setup correctly. If your Lee .40 resizing die is sticking brass to the point where the case rim is getting ripped off, I would say send it back. It's out of spec. Glocks probably have some of the loosest chambers, and I have not had any trouble with mine. I do not lube pistol cases.
I cut the Lee paste style resizing luibe at a 8:1 or so ratio with Gas Treatment (red bottle - 99% isopropyl) and mist my rifle brass with a spray bottle. Works great, and application is fast as lightening.