I waver. On one hand, the minis are adorable and the perfect size for most people. Small and compact enough for apartments, easy to fit in any care and sturdy enough that you won't accidently break them. Grooming is pretty easy, though the ears require special care if they're not cropped. Very cuddly and pretty smart.
However, I have decided through lots of personal experience that there is little in this world more piercing and annoying than a mini Schnauzer bark. They have an almost super-sonic edge to it...and they love to bark bark bark! It's not every dog, but a good portion of them nonetheless.