So I'm thinking of buying one of these calcs, and TICalc says that the Voyage is just the titanium, but with a different case. I figure that there's got to be more of a difference then that so: What are the differences between the Voyage 200, and the TI-89 Titanium, and which is better? Please take price into account, and defend your opinion with facts.

Datamath: 89 Ti, V200.

Largely the same internally, but I think the V200 is discontinued which is a big minus, since it'll cost more and be harder to find. V200 has a QWERTY keyboard and slightly higher-res screen, but they both run the same AMS and have equal amounts of memory.

I'd go with 89Ti simply because it's going to be significantly easier to find for a reasonable price and lacks the full keyboard so there's much less chance of it being barred from tests and whatnot.