Toshiba's story is a sad one, they were at the top of state of the art in tech and their laptops were the ones to have. Then it was discovered that they sold secrets on noise suppression for submarines learned while working with the US Navy and got themselves banned from the US market for many years.
OCZ was on the cutting edge of SSD tech and got burned a bit in the beginning, but their tech improved and is outstanding. IMO Their big mistake was the choice of not licensing 'proprietary controllers, firmware and software' in a budding industry. Survival means being in the game and they made a poor choice, they had proven tech which they could have marketed, tech which has a limited shelf life as the next big thing will come along.