Thanks, T5. You described the opposition effect on Saturn's rings (aka Seelinger Effect). At and near opposition, all the ice chunks have their shadows directly behind them, causing the whole structure to appear brighter. Since a week has past since opposition, apparently that's enough time for the rings to dim somewhat. They are still pretty bright, though. I discovered that a fourth moon, Enceladeus, was following Saturn very close to the ring. I never detected it, probably because of the glare.
Hellas looked so dull I wondered if the southern hood is starting to form (it's late fall there on Mars). I've seen the hood have that gray color in the past but I don't know if it even extends that far north. Maybe Carlos or Jeff Beish can tell us more.
Frank, thank you. The belts and other structure are still low contrast but were visible in integrated light. I used the filters to confirm what I was seeing. The good seeing probably helped, too. I tried 338x (my 6mm Burgess/TMB Planetary ep that I never get to use), but the contrast was better at 250x (my 8mm Burgess/TMB that is a real workhorse) even with the seeing. That's a gas giant for you.
BTW, Saturn was 10 arcsecs bigger than Mars (19.4" vs. 9.4")--what a difference that makes!