Do you hunt public land alot? If your always setting up each day, figure out which one you can pack better. Its pointless when you get to your spot, and end up making a ton of noise trying to set up, especially if you get in late. If you do alot of all day hunts I would lean toward the M150 if it's the most comfortable that you found. I like my XOP, I don't think you could go wrong either way. Although, I wouldn't leave either set up on public land even with cable locks..it might just end up walking away. You could always reduce the noise of the ladder stand and leave that up on public ground, if you have a nice spot. What climbing sticks are you planning to buy?