100% ceramic. ill never use bio balls or scrubbies again. ceramic media can be completely submerged, and that means no messy baffles, dividers, or drip trays.
I agree...ceramic rings and filter socks are the way to go. Im thinkn of rockn a 130g sump w/ 60lbs+ ceramic media w/ dual filter socks on my 225g project. Much easier to maintain than the others.