I'm not sure what the future holds for LGCY. Most thought they were just circling the drain, but they found someone to help them buy most of their debt so they could restructure to a C-corp. Rising oil price sure helped as well. I think it's likely the restructuring gains shareholder approval and they become another small-cap E&P co. At that point, they don't have much drilling inventory, so expect to see a lot of dilution to buy drilling inventory. Also, expect that drilling inventory to be expensive. Past their current drilling inventory, you're betting on their management being able to execute a good acquisition and development program. I know some of their management and they're good guys, but they don't have much experience with development beyond their 2 horizontal plays.
Concerning PE, Matt Gallagher is the sharpest guy I've met in the oil business. I believe he will make good decisions and run the company very well. Bryan Sheffield is the most risk tolerant person I've met in the oil business (I never met Aubrey McClendon). I like them both, but I think the more Matt takes over, the more successful they will be.
CXO is a very well run company. They're probably not quite the value buy that LGCY or PE could be, but they're very conservative and consistent. They're more like the BRK.A of the Permian.