that is great..how about Mac?
You might have to authorize the new PC if you've bought music on your iTunes account. You only get 5 authorizations in a given year. After a year you can reset the authorizations and authorize a fresh 5 devices with the older authorizations being revoked. To keep your 5 devices, you can revoke the authorization on an older computer. Simply open iTunes on that computer and there should be an option to unauthorize it somewhere in the menus.
What about keeping contacts?
By Library, you mean the ITunes Music folder, right?
Got it. So I just put the backup data in the same folder on my new computer huh? Why does Apple have to make it so freaking complicated.
Be thankful they at least have given you an option, on my EVO if I didn't have Titanium Backup I would be SOL as to backing up my phone.
You don't have automatic wireless sync with Google for contacts, calendar, photos, etc? You can't mount your EVO to your computer and transfer and backup files? Nandroid? Free Titanium Backup. Dropbox? You have so many options with Android. I still don't understand why you're using Android. You claim used iPhone4 costs too much yet you spent like $500 on iOS apps. Your Evo plus $200 should get you an iPhone4.
the sync doesn't back up app & app settings, when I flashed my phone I tried that and I lost all my text messages and a bunch of other stuff. And that $500 I spent was over close to 3 years. I will get an iPhone 4, when they're in the $250 range on CL, which at this rate won't be until well into 2013. I don't like the wireless sync much anyways, it took all my hires contact pictures and replaced them with uber compressed resized ones that look absolutely horrible on the full screen caller ID app I bought. They might have fixed this in GB, but I doubt it since when I contacted them about it last year they didn't even consider it an issue.
Yes Gingerbread syncs all your apps
but does it sync the app's data too? My Droid 1 always re-installed all my apps right after I wiped and installed a new rom. But none of the data from the apps was ever there. I'm not running GB so it's a moot point but something I should read up on for the future.