Absolutely love my Naos 3200. It fits my hand perfectly although it's a bit of a grease magnet. I am, however, NOT a fan of the braided cable, it causes plenty of friction with the back of my desk which has become a nuisance.
Got a minox 3200 for year or two now and I love it. Just bought an Avior 7000 for my lefty brother He really like it but has to adjust to the new sensitivity.