Do I need a MacBook Pro?

I have a 5 year old iBook G4, which has served me well, but I’d like a quicker computer with more storage, media, and speed capabilities.

What I do on current computer: Write, make home movies, go online, store photos/music, keep a calendar.

Additionally, I’d like to have: Speedy response, the ability to watch Netflix instantly, speed, matte screen, 15 inch.

Should I go for the Pro or stick with an iBook? Less expensive is best for these economic times.

Any recommendations re: model, processor speed, memory, hard drive size, etc. is appreciated.