Superb golf ball with excellent distance and soft feel
I have utilized various Bridgestone golf balls for several years and my favorite has usually been the 330S. I did not like the 330RX as I felt it was too hard around the greens with minimal increase in distance (although the spin is less which keeps it straighter).
The 330RXS is a great ball. It goes as far as the 330S and has an explosive feel off both the driver and iron. It is extremely easy to get in the air with the irons.
The main difference I can tell is with the chipping and putting. The 330S has a much firmer feel. Ultimately, I prefer the 330RXS off the tee and with iron, but prefer the 330S with my wedges and putter