See, here's where I differ. (This is just MY humble opinion. No offense to anyone.) Roto toms are NEVER cool. I have always seen roto toms on the kit of the guy who THINKS he's Neil Peart, but can't play like Neil or afford a set of concert toms. Seeing a set of rotos on a kit instantly makes me think the drummer is gonna suck. Unfortunatley, I'm usually right.
Octobans makes me think the drummer might know what he's doing, because he's after a specific sound, not a budget solution.