I'd like to pick up an HTC One M8 but..

I'm absolutely baffled by this whole process, and purchasing new phones is just about the only thing I have absolutely no patience for. My current phone, the HTC Desire 816 on Virgin Mobile has served me wonderfully, but after two years, a broken audio jack, and some new issues with overheating, it's time for me to move on.

The HTC One M8 has been my "dream phone" since the first time I saw it, but I have only recently felt comfortable spending a bit of money on a phone. I'd like to stick to one of the non-contract networks, and I'm a big fan of the whole "unlimited everything for ~55 bucks" thing that I've gotten on Virgin.

Can anybody fill me in on if it's possible for me to get the M8 on a non-contract network? And I hate to sound disrespectful or anything but.. you guys are all way smarter than I am when it comes to anything phones, so if it is possible, would you mind breaking down what the process of doing all this would be for me?

Thank you in advanced!