I, too, have the EVOC case and HIGHLY recommend it.
Flew to whistler with it last year and fit my complete LG jedi with DC fork, wheels, and some pads in the bag, made it weight less than 70lbs for Delta. I put all my other gear and parts and tools in another checked bag. Pricey for sure, but worth it if you plan on flying with your bike frequently.
FYI do not try to fly with tools in a carry on, TSA thinks you might try to disassemble the plane mid-flight.
As for the THULE box, you will have a VERY hard time getting a full DH rig in one of those. We got a FR bike with a SC fork in, barely, and had to put tires and some of the parts in another bag to get it under 70lbs.
My brother wins, though, with his prototype box. $20 bike bag from fleabay, reinforced with cardboard from a bike box, full bike, extra fork, 8 tires, spare parts, tools, under 70 lbs. One-time use only, though. Thing was trashed at the end.