Lee makes a tool for a job and it does the job . RCBS is worth the difference in cost ....... If it's what you have or can afford use it .
Having grown up with RCBS, Lyman, Redding, Bair, etc. dies, I actually prefer LEE dies and have only recently sold my last set of Redding dies.
I'm not saying LEE is "better," but I appreciate their features a lot more than others'. Doesn't hurt that they cost a lot less, but that's not my motivation. My needs are different too though, as I've settled on a few cartridges and insist that all ammo made from one will function well in all chambers present. I'm done with fiddling with different neck sizing buttons, expanders, special case lengths, bullet sizers, etc., so this may not make sense to anyone else at all.
I've not had near the problems with LEE equipment that others have, though I have tuned a die part or two. Seriously, the one real problem I've had is the shell-holder retainer spring holding the shell-holder, or worse yet, the bullet sizing pusher off kilter. I had bullet sizing pushers rubbing dies all the time until I implemented the o-ring trick.
Not my idea. I got it from someone on the Handi-Rifle sub-forum on Graybeard's, back before Remington whacked the Handi-Rifle.
This is a Hillman part form Ace Hardware: