Exclusive Sony U50 review - Engadget - www.engadget.com We reviewed the Sony U50 and we’re happy to report it just might be one of the best portables, while a lot of companies are showing prototypes, Sony actually brought an amazing device to market…The U50/70 is the smallest and lightest full-power PC on the market. The hardware really speaks for itself, we took a lot of photos and video make sure to check’em all out.