My

even though I am not familiar with the different brands.
I have a mono-pod and a bi-pod. I mostly use the bi-pod and it is now because of being slightly bent not adjustable anymore. Truth is I never adjusted when I could. I set it at a length to use it on flat ground. Even though I have taken quite a bit of game using it I have never had a problem making it work on uneven ground. The thing is I use it as a walking stick most of the time. I know when you are younger you think you will never need that but I wish I would have had it all those years prior.
Almost never do I find a place where I can shoot anything but standing up. The sticks are always in my hand and when ever I stop they get set to support my gun so I am always ready. Maybe this is not applicable in opener country.
For me things seem to happen quick so I find that having them in my hand ready to go is #1. If you have to fumble around for them generally it is too late.
When my bi-pod breaks I would probably just make my own. Make the end a little pointy so you can jam it into the ground. That helps. My mono-pod is hard to shoot off of on hard ground but it ain't bad in soft dirt where you can sink it in a way. I find if you can set them slightly a head and lean into them a bit they are very steady.