i think that the VPR Matrix could be the first real competition to the TiBook. i know that might sould weird, especially because it's a PC, but if someone was looking at getting a TiBook and comparing it with the VPR Matrix they might think that the Matrix is pretty much the same shape (althought not as cool as the TiBook 😀) and get it, just because they're already familiar with PC's.
Apple has had the most cool stuff for awhile now, but with PC laptops getting better design, i think that in the future the TiBook will have some competition.