Otterbox is known for having pretty durable cases. In fact, there are some people who swear by their cases. Which is great because they are really great cases, even though they normally make your device pretty bulky - which is the main reason that I'm not the biggest fan of them. The Defender line of cases is their bigger case which has a built-in screen protector as well as a holster. So naturally its the most expensive version as well. For the HTC One M8 it's going for $59.90, and the Commuter is a bit smaller, and so is the price-tag at just $39.90. Otterbox is also selling the parts of these cases individually, so you can choose your own colors for your device, instead of being stuck with 2-3 pre-made color combinations like they've done in the past. Which is pretty awesome too.
For the Defender, the Slipcover is going for $24.95, the plastic shell for $34.95, and the holster for $14.95. So obviously it's going to cost more than just buying the Defender case all in one. But this is for those that need to replace a part of their case, or looking for a second color so you can change the color from day to day. Which is pretty cool, but I'm not sure how many people will take advantage of that. Onto the Commuter, the slipcover is $24.95 and the plastic shell is $19.95.
While the HTC One M8 has been rendered unrepairable by iFixit already, it's a good idea to pick up one of these Otterbox cases for your new HTC One M8 anyways. Which you can grab from Otterbox or Amazon (Commuter link and Defender link). There's also some great cases from other manufacturers like Incipio, Spigen and many other popular ones out there. Let us know in the comments below what cases you plan on picking up for the HTC One M8.