It's about what you want out of it. The new Pearl (8110) is exactly the same, feature-wise, as the Curve, except that it has video record. Keep in mind, price-wise, the Curve is $200 with a $100 rebate, while the Pearl is $150 with $50 rebate. So if you sign up for the unlimited data plan, it all comes out in the wash. I've used the old Pearl for more than a year and, while the keyboard took some getting used to, the small size is great. However, if you aren't particularly good at spelling, or you have vision difficulties, the larger screen and full keyboard of the Curve will be vital.
I'm really confused on whether or not I should get the pearl or curve? I like the pearl because of its small size, but the curve has a full qwerty keyboard. Also, the pearl $50 less than than the $200 curve. Which one is the better phone, and which one should I get?