I like the look of aluminum....before the first wheeling trip. Unless you go with real beadlocks, I'd stick with steel and lighten the load elsewhere if possible to make up that extra 100 lbs. Maybe skip the extra value meal for a year or so...Anyway, I've beat the crap out of a few sets (different Jeeps) and I do not think aluminum would have lasted as long as my steelies. And yeah, I've used a wrench to reshape my steel wheels. Try that with aluminum.
I have new(ish) 8" steel rims and want to switch to 12.50's in either 33" or 35" size. Hard to make that decision at this point.