There are so many stands to choose from out there, and they are mostly getting better each year.
Rivers Edge has the largest platform that I know of, and I prefer a large platform. They have a thick foam seat, that is comfortable enough to sit on, but the seat can be noisy.
The millenium seat is probably the best and most comfortable seat out there, but their downfall would be that their platform is too small. When you stand to shoot, and the seat is lifted out of the way, be careful as the platform tapers down to a very narrow width.
The newer Gorilla stands are very comfortable with their adjustable float style strap with seat attached, and armrest. The platform is large enough.
One of the best out there as far as comfort, is the Ol'Man. Their mesh style seat is a comfort to sit in all day. The platform is large, but does taper more than some, but not like the Millenium. It also has the footrest (many brands offer this option now), and removable armrest. They also chain to the tree, which is much safer IMO.
If you're looking for a ladder, you can't beat the comfort of an Ol'Man ladder. The same mesh seat, w/removable foot, arm, and shooting rest. 20 ft height gets you up there.
There are many good climbing stands out there, and have gotten better, and lighter with each year.
Climbing sticks,, there are many versions to choose from. Always go with a stick with an opposing step. Should you need to stop and stand on the stick, it gives you equal footing to stand on. Another thing to look for is a stick that has non-skid paint applied, or a strip that sticks to the step. Muddy or wet boots on a step need all the traction advantage you can get.
Hope this gives you some ideas to work on. Any questions, feel free to ask me. I have hung literally thousands of stands over the years.
On another note::: Screw-in steps are very dangerous. They are like placing fish hooks in the tree as obstacles. In the event, (Lord forbid it doesn't happen) you should slip and fall, (always wear a climbing harness) these steps can rip you open and cause you to bleed to death before you can get to help. Or leave you disabled and scarred for life. I have seen this first hand. Do not use screw-in steps to climb a tree.