If you like Windows 7, you will most likely want a Windows Phone 7.
If you like Apple OS X Lion (or other versions), you will most likely want to get an Iphone 4 (or 3gs)If you like Linux, you will most likely want an android phone.
To me it's as simple as that. Currently, both my laptops are dual booted with Windows 7 and Ubuntu but phone wise I chose a Samsung Focus and I am extremely satisfied.
Also, just something to remember if you don't have much experience with these computer operating systems is that Apple usually has a "locked" OS, which means you don't have many customization options. Windows gives you a little more freedom but not as much as Android systems.
If you have any questions I will be more than willing to give my 2 cents just write a comment.