They are more fun in the design department. You can build a more elaborate home for them using a combination of live & fake plants etc. This is not an easy task with the leos. Their actions are more exciting to watch than the leos because of their climbing & jumping abilities.
I'd never give up my leos, but cresties are beautiful & amazing.
Easy as they come, they dont NEED to eat live food, although i do, room temps, no special lighting or light cycle, no heating source and they dont need a TON of room. Besides they imo, are more fun to watch than a leo because they move around a lot more.