The race for the thinnest, lightest notebook in the land continued Tuesday with the debut of Toshiba’s Portege R500-S5007V. The latest model adds a 128 GB solid-state drive — the only one available on the market, according to the computer maker. “From a product perspective it is a stellar product,” J.P. Gownder, principal analyst at Forrester, told TechNewsWorld. “Toshiba is trying to demonstrate their innovation by including this. Essentially it is an early move in the solid-state drive market.”