I use Lee dies primarily, with over 30 sets of dies on the shelf. I also own Super & Master Simplex, Hornady, Redding, RCBS & Dillon, but will always look for set in Lee before any other. The Lee Ultimate dies are perfect as far as I'm concerned, with collet & crimp dies included.
Press wise, I run a Super Simplex 6-hole turret, Simplex Master turret, RCBS Junior O-frame, Lee Classic Cast O-frame, Lee Classic Progressive & Dillon Square Deal. Aside from the Dillon & Super Simplex, all the presses work just fine with the Lee dies.
I've had reloaders whinge & complain about the RGB dies being poorly finished etc, but I've never had an issue with them. Granted, I do take the extra step of giving the internal surfaces a bit of a polish with either toothpaste or polishing rouge. That said, I have used the RGB dies without this added step, all without issue.
For the reloader on a tight budget Lee dies are No:1 in my books.