Doodles also tend to look goofier IMO.

And keep in mind that experiences with specific dogs are pretty meaningless — adopting or buying a dog is always a gamble. You have to rely on odds tied to breeds' general characteristics and whatever observations you can make from limited interaction with the individual. With a mutt, you don't have as much info to rely on, except that mixing breeds seems to smooth out some of the issues inherent to or bred into the source breeds.