I have a bichon x mini schnauzer who is 4 mths old. Hes much more like a bichon then a schnauzer though.
Hes lovely, very friendly and playful. Great with the kids 1,3 and 8 who roll around on the floor with him, pick him up etc.
No problems with the cat (we have had him since almost 9 weeks old though which helps).
He needs grooming at least every other day which takes about 15 minutes (has a bichons coat) but i do it when im watching tv and he has a sleep while im doing it . He goes to the evil groomers every 6 - 8 weeks though im going to try doing it myself.
Hes quite yappy and doesnt like being left but is getting better with training. We go to puppy school once a week and he picks up commands very quickly though unfortunately house training is prob going to take a long time. (He has maybe one accident a day - which might actually be quite good im not sure).
He doesnt need much exercise, a 30 min walk and play in the house and hes happy.
All the bichons ive met (theres loads round here) have been lovely and i would definitely recommend them.
One more thing, bichons are becoming very popular dogs and as a result the puppy farms are starting to churn them out so be careful where you get one.