Personally I'm not a fan of otterbox. Good cases for protection, but I've always found them to inhibit my screen/controls too much, I had one for my DROIDX and had to cut it up to make it half ass work. I ended up tossing it and just using Invisishield. I just ordered the Body Glove case for my new Maxx which is in the mail too. Also has a kickstand. As for a mount on a budget, go to Best Buy and grab a universal holder. I used to be an installer and used them for dozens of different devices.
And the body glove was $15 fyi
Car mount about $15-$20