Yorkies are my favorite. I haven't had a maltese, I would rather not have a white dog, I am way to anal, the poor thing would be washed to death I'm afraid
! I have had chi's, my hubby's favorite. We have one now that's really pretty, not all chi's have bug eyes and the long haired one's are very nice. Our Cosannah is a love, all puppy's can be hyper but Cosie is a little over one and is the biggest cuddler/kisser we have ever had. They do shed though and she is vocal - but so is Lida Rose! Lida is about 4 months and almost potty trained, I think it helps if you have another dog, she follows Cosie's example. Cosie trained really fast, she is fastidious (one of the things I love about her) sometimes she will hike a leg to keep the peepee from getting on her little foot when it starts running. She is also good about letting you know she has to go and will not give up. Lida is starting to do that too because she's learned from Cosie.
I would suggest looking at several different pups of all the breeds you are interested in, when you fall in love you'll know what breed you really want!
Good luck, if you pick a yorkie though you are in for a real treat!