What can you tell me about Rat Terriers?

I’ve been looking to get a dog, but every time I find one, I read the profile and there always seems to be something unappealing – drooling, gas, shedding, digging, can’t be left alone, etc! Those profiles make every dog seem like a disaster waiting to happen, yet, I had a dog growing up (a mutt) that was very well behaved without obedience training or any of the fancy advice out there today.
I’m thinking of getting a rat terrier, but I don’t want a house full of dog hair. I don’t mind brushing everyday if that will help combat the issue. I also need a dog that won’t destroy the backyard or my house. I’m willing to go to obedience classes and crate train, if that will help. What do you guys think? Can a rat terrier work?