I go all the way back to before there was a tree stand industry, and despite that I've always tried to keep myself tied off to the tree, no matter what. In 30+ years, I've seen way too many broken backs. Even though it's only 3/4 mile from the house to the stand, trying to make it just on my elbows is a daunting thought --enough to want to make all reasonable steps to protect against it. I've done 3/4 mile on my elbows, but it was in a cave and I was young and in perfect health.
Whatever you can find that is within your budget and weight range is going to be fine. My last one cost me all of $35. However, all I do is hunt out of ladder stands. If you're hunting out of a climber or hang-on, I would do everything I could to insure my safety.
I've had two treestand failures in my career. Neither resulted in serious injury. Nowadays, the overwhelming majority of accidents occur during ingress and egress. Remember that. There are a bunch of systems that keep you attached from the ground up to the blind. The cheapest is a length of climbing rope hung off the stand to which you attach a prussic knot and then hook into that.
I few years ago, I wrote a piece Treestands -- A Survivor Looks Back.