Get aluminum... easy carry in. Spoked wheels, not plastic! Some have the optional wheel protectors/brush guards. Animals STILL HEAVY PULLING UPHILL!!!
I have seen the ladder/cart. Looks ok, but if its made of steel, its gonna be heavy and probably defeat the purpose of making hauling one out easier!!!
I got the Cabelas Mag Hauler. Nice cart. I carted out my deer and sometimes two others from guys I've met on the access road (as long as they'er willing to help pull or push.) The only beef I have is the plastic knobs on the pins. Otherwise a good buy.
I echo the comment about the plastic spokes. A guy where I hunt rifle shot a really big 12 point last year and had one of those small carts with the plastic spokes. He didn't make it a hundred yards before the spokes broke out.
I also have one of the Cabelas mag Hauler, as long as your trail is reletively clear it works great. I have had one close to ten years and when I first got it the guys I hunt with used to make fun of it and call it a baby wagon. Now as they get older most of them have one and like me love it. I even use mine in archery season to wheel in my treestand what a back saver, I will tell you that if use it in the snow that snow gets stuck around the wheels and you have to stop and clear it but to me its still worth it.
The one thing I like about my Mag Hauler over the one in the link you posted, is that the mag hauler has a canvas type cover over the hauling area to keep stuff from falling through. In case you throw your gloves, jacket etc. on there with your deer.
I agree, anything with wheels will work great. Even in the sand it still beats the heck out of dragging. Last year we used one on the White Sands Missle Range in New Mexico to get my brothers gemsbuck back to the truck. Worked nice with one guy in the front and another helping at the back.