We have a pug, she's 6 months old now and I had been in contact with her breeder since before she was concieved

I disagree with the snot and drool mentioned above, she doesn't do any of that unless we take her for a walk when its warm then she has a bit of a 'wetter' mouth than usual. She also isn't very noisy, probably cause its just her. She's not very snorty like pugs can be and usually only does that when she's excited or she's sniffing something out heavily. She does snore on occasion tho

I would be worried about having a pug with kids as young as yours as their eyes are very delicate and kids can't resist 'poking' sometimes. Also pugs are very social, they are bred to be companion dogs and want attention 24/7. She will sit off by herself and chew on one of her toys, but usually she's under foot or wanting in someones lap. At meal times we put her in her crate cause pugs tend to be glutonous 'beggars', and she's fine in there if we need some space for a little while (she's in there taking a nap right now, pugs are also very 'nappy') Mine is also very 'licky', she's not a wet licker, but a licker none the less. Pugs are also very prone to overheat due to the flat face (as are all brachiocephalics) Their palate is shorter than most dogs and dogs pant to cool themselves off so pantings not as effective for them. For that reason its recomended that pugs be house dogs and not left outside in extreme weather. Potty training any small dog is harder than a big dog cause they can't 'hold it' as long. I find its more me being trained then the dog and recogizing her signals that its time to go out. I also leave a 'piddle pad' by the door she goes out of in case she has to go and can't make it and she is very good about going on there for her 'accidents'. I should also tell you pugs are reputed to be heavy shedders. I can't say I've had a problem with mine, but mines black and they tend to shed less than the more common fawns. I'll see little black hair on her bedding, and I notice alot of shedding right after she's had a bath, but other than that I'm not living in the cloud of hairs that I thought I would be from reading. Grooming is minimal, other than keeping the claws clipped.
I should also say I had a hard time shopping for my pug. I made the mistake of calling the 'show breeders' first, which where crazy expensive ($2000 at one!!and thats for a 'flawed non show pug') plus the breeders were a bit snobbish and not the least interested in providing me with a family dog. I was lucky to find a breeder nearby that was more geared towards placing their puppies with families than people looking to show them. Mine cost me $600. She had her dew claws removed (recommended so they don't 'gouge their eyes out') and all her shots up to date. I spent $35 at the first vet visit, and will be forking over $130 to get her spayed next month. Theres a pet store nearby that sells puppys (90% chance they're from a puppy mill) and they're selling their pugs for up to $1500. Its an expensive breed due to popularity.
My brother has a boston terrier that he paid $300-$500 for and he is crazy hyper! I decided on a pug because I wanted a dog like him w/o the hyperness. I have seen other bostons that aren't so nuts, but the energy he has is amazing. I've never actually held him and petted him cause he's always running or jumping like he's got springs. When you do get close to petting him, he burries his muzzle in your hand and 'slimes you'. I was on 'poop duty' for him a few times when my brother was OOT and for such a little dog they've got alot of muscle cause he'd practically drag me across the yard. He's well out of his puppy years but he's still the same. My brother says he's not as nuts when other people aren't around. My niece just turned 2 and they had him before she was born so he must be alright with kids. From what I hear bostons don't shed much. He's very snorty, but isn't too noisy with his barking.
I have a friend with a schnauzer, she got that breed because her son has alergies and they're supposed to be dander free and non shedders. I don't really care for schnauzers, they are heavy barkers and are a bit aloof. But I don't have much experience with them so can't say much about them.
Thats the extent of my experience with dogs, I hope you guys find one you really love!