we first saw saturn in the 10" dob with a 26mm (48x), like you i was a bit disappointed.
i bought a 2x barlow (GSO ED for $80) and on advice from this forum i bought a 17mm Baader Hyperion (75x). With the barlow that is 150x and the view is
much more impressive, although still not much in the way of details. i thought i saw the cassini division but wasnt sure if i was imagining it or not
i also think i saw some detail on mars one night.
i want to go a bit higher, might buy something like a 12mm (105x and 210x barlowed) .. i think that would give pleasing results, i expect i would see the cassini division.
if i could ever get use of 8mm or 6mm barlowed (317x or 423x), i would be seriously happy - would see some very nice details.