Seems there's two configurations available under that designation. One has a Pentium dual core 1.6GHz processor and 512 MB of RAM (list $950), while the other has a Core Duo 1.9 GHz processor and 1024 MB of RAM (list $1050). If you're looking at the second configuration for $649 it would be a sweet deal. The Toshiba has the Core 2 Duo processor and 1024 MB of RAM. Definitely stronger than the first Lenovo and somewhat stronger than the second, but the performance difference might be marginal for your applications and not worth the cost difference.

Never owned a Lenovo myself, but they sure have fans among people who want something basic and high quality.