I have two PC's that I maintain just for my kids to play games on. I've moved myself over to all Mac and trying to get the wife to do the same. BUT I do have VMWare Fusion for the few PC apps I have to run for work. But I spend 90% of my time in OSX.
For those who use the Mac for email / web browsing, wouldn't it be better to have your PC and an iPad2? If I didn't have my laptop, and / or wasn't working on Mac development, I would go that path. But I really love OSX and find Windows a bit annoying now (after being a PC fanboy for 20 years), even windows 7.
If it was just for me, I wouldn't have any PC's, I don't play enough games to justify having one. I did have bootcamp on my MBP but I needed the disk space and deleted it.. I haven't looked back.
I moved my wife to a Mac back in the nineties.
I have an iPad for development and outside of using it for testing and an occasional time-killer, the device is really not practical. It's nothing more than a liesure entertainment device, a toy. Its biggest problem is that its mail app is pretty much a minor update from the iPhone and the same goes for its keyboard and Safari.
For a device as big as the iPad, this makes for a really poor experience when trying to use it for something other than killing time. Its mail app should be more on par with OS X's app and it's not even in the ballpark. There's no way to format content. No way to filter any incoming email. Even if you know something is spam, when you click on it to delete, the lame mail app renders it out with a tired-animation.
Browsing the web on an iPad is passable. A few years back mobile Safari was rather impressive, but now it's more of a hinderance, because of Apple's intentional restraints. It's frustrating that when I do try to use my iPad for this task, because the screen size is right for laying back, I alway hit a wall, because it doesn't support any plug-in, or I can't do something as simple as search with in a page. I gave it a try, but now if i need to checkout something on the web and my Mac is off, I use my Nexus One, which with its tiny screen is a way better device at browsing the web, when it shouldn't be.
Anyways, if I did buy something just for email and browsing, it would be a netbook. They're way more useful, they're actually practical. They do so many things that an iPad can't, that no tablet can at the moment. BUT, since I have a MacBook Pro, I have no need for one.
If you ever wanted to upgrade your MBPro's storage, there's an app which mirrors drives exactly -- I forget the name, but can find out if needed. I upgraded my internal 5400 rmp to a larger 7200 rpm and it moved over all of my pro apps with no issues what soever. It saved me so much time.