I'll put a vote in for Mishi? Isn't the Damond rear mount? I wouldn't call that an advantage at all. The Mishi is also easy to install, comes with factory connectors (the less clamps the better) and can be emptied in different ways. I chose a drain valve under the can. Can't be easier. Open the hood, put a paper cup (or whatever) under the can and open the valve. No drain hoses required.It also follows the direction of the factory plumbing, which drains back to front. As for capacity, that's a non issue regardless of the can you choose. You can go thousands of miles on any of the cans before worrying about emptying.
Correct me if I'm wrong, but doesn't the Damond can have a drain hose that routes to the bottom of the car? It seems to me that even when you do drain it, most of the oil is just going to cling to the drain hose anyway?
Both good cans. The Mishi location and stock connectors just make more sense to me. Look at the path of both setups. The first Damond hose goes all the way up front, then u-turns all the way back to the can. Then it exits the can to the front of the car again. The Mishi can sits where the Damond u-turns, making both hoses much shorter. The less oil sitting in hoses (or drain hoses) the better.