The Pocket PC's are a bit overpriced IMO. I guess whether a Palm device or Pocket PC is "useful" or "worth it" just depends on your needs, interests, and values. I find my Palm Vx to be quite cost effective.

Everyone parrots that "Palms are good for appointments and such" but they are obviously capable of so much more. Pocket PC's have additional functionality, but they aren't really functions that matter to me.

As for replacing batteries, I believe that you get about 1-2 minutes. You're not really rushed all that much. Additionally, you should sync often and consider something like Backup Buddy. Handspring Visor users can opt for a backup module.