First, the OLPC is great for classroom use, but that isn't all it offers by a mile. You already know about the amazing tech advances, like the innovative screen that you can use in sunlight. But there is more than that. Classmate actually misses the fundamental point of the OLPC, as far as I'm concerned, which is essentially that kids invariably grasp the tech before the parents and the teachers do, so why hold them back? OLPC is a way to educate kids who have inadequate school resources, in areas where there may not even be any adequate schools or teachers, maybe not any at all, let alone any that know anything about computers.
The key difference to my way of thinking is that One Laptop Per Child (OLPC) was created for the sake of children and to make technology accessible. Classmate was created merely to compete with OLPC, child welfare was a secondary consideration.
My concern is the lack of ergonomic design. Will the next generation be nearsighted with carpal tunnel syndrome?