Can't say as to off road performance or an ride quality as I've never had them but you can bet on two thing. 1) They will be LOUD. 2) You won't be able to keep you jeep clean. At all. They will sling dirt, rocks, mud, muddy water, and water else they can find all over you Jeep. It's all personal preference though.
EDIT: plus I like the ions better. ( I'm biased because I have those