Papillions and WELL BRED Chihuahuas. Those are the only small breeds that really have caught my eye.
I complete agree with the well bred Chihuahua comment. My girl is from a BYB and although I believe that socialisation and training play a HUGE role in how a dog matures, I cannot help thinking that genetics also play a part.
I would love to own another Chi, but from a ethical breeder or a rescue of course.
My next dog may very well be a Pap though, I have been researching them for quite some time, although my next dog is a while away. I actually have my choice down to 3 breeds - an amazing feat really.
I enjoy training, especially agility and tricks, I think they would really suit my lifestyle as well.
Other little dogs that catch my eye are Jack Russell Terriers, Glen of Imaal Terriers, Bichon Frise, Shelties (ok not so small), Poodles, Petit Basset Griffon Vendeen and Min Pins. Oh and the beautiful Cavs.