i played my first 20ish games teamed with four level 30's, so i understand the skill difference. trynd is fantastic in casual and i play him relatively similar to how you described. spin2win is just too good.

i also play zilean and fiddles, although i strongly prefer zilean if my teamates don't suck gigantic dick. fiddles is a monster at 1v1 and overall a good asset to most team comps in my experience.

i think i want to try rammus.. he looks absolutely fucking broken..