Their collet dies are excellent. Some of the best ammo I have made is with this die.
However the full length dies in my experience bend the case rather than straighten it and the seating dies are just a joke.
It is possible to make excellent ammunition with basic Lee die sets but only with very diligent load development and tuning seating depth. Personally I would rather start with dies that create straight rounds than waste components compensating for cheapo dies. If everybody measured the case runout nobody would ever use a Lee die.