Depends how "crazy" is defined. 1.5" diameter and below is generally boring to me. I usually go for dildos between 1.75" and 2", but I'd like to try 2.25"
My vagina is extremely tight and finicky still, so I tend to like slimmer toys. I'm trying to stretch it out a bit, but I'm taking my time with it and enjoying the ride.
1 3/4" is pretty much my upper limit when it comes to girth - and that's only after a lot of warm-up and lube. I prefer something in the 1 1/4" - 1 1/2" range.
In reality, I like average sizes. In my head though I'm always tempted towards the much larger toys that I probably cannot handle. It's sort of a "don't let your eyes be bigger than your stomach" thing.
Yes and no. I do enjoy the occasional fisting, but it takes a ton of warmup and the right mood. In terms of toys, I generally find 1-5/8" is perfect and I generally hate anything longer than 6".