>>2707860Higher end ones have better construction / durability are made with better metals (carbon fibre). Lower end ones are generally aluminum (heavier). Heavier's fine if you don't care, just make sure the height / head / and flexability are all in-line with what you need.
If you care about stability, I'd make sure it has something clippable on the bottom so you can hang a backpack from, like this one.
