For the last few weeks I've been going about the task of researching new cars. The lease on my 2007 Toyota Prius is almost up and I've got to decide whether to lease a new one or switch to a different brand. A few months ago I would have definitely opted to lease another Prius since I've been happy with it, but the recent news about accelerator problems on various models led me to reconsider whether the once vaunted Toyota quality is slipping, and not just its floor mats.