Probably depends on the weight of your rider. We have the Answers and have 0 problems. Never really worried about cogs because we don't mess with the rollout. I've heard that the Answer mini alum axle can have issues if you're a heavier rider. Not sure about the 24 vs. 28 spokes but you have to think the same with Crupi, weight and strength might be a bigger issue.
Personally, I'd think eiither would be a solid choice but I would talk to someone who knows wheels and see what they recommend for your particular situation (kovachi or local wheel whiz).
For us, we went with Answer expert hubs and mini rims since rider weight was just over 100 lbs and jumping, but not nearly ready for 1.5 rims. Simply relace the hubs when we are ready. Very little cost if they make it that many years which at this point, I have no reason not to believe they won't.
This post has been edited by crash813: Jan 7 2011, 01:52 PM