I have been a PC user since the mid 80's and have been looking at Mac's for about 10 months now. Like most I waited for an updated product line before getting serious. So here is my questions. Trying to decide between the 13.3" and i5 PowerBook PRO(which seems like a common question). I like the portability of the 13" but being a PC user for years my brain says buy the most horsepower you can afford if you plan on having this machine for 3 years. Is this true in the Mac world? I use www, itunes, email, MS-Office, want Garageband and Handbrake. Will the i5 mean much to Garageband and Handbrake? What is a good software like "DVDShrink" to back up by DVD's for streaming? Can you run a Macbook Pro plugged in all the time or should you be cycling the battery (plugging in a PC laptop all the time spelled certain death to a battery)? Should I be hidding out from all my PC using friends after the switch? Thanks for any help.