we tried several but this is the model we used on the top of our stairs
gatewe had it fixed on one side & you pull up the handle & then it will swing the way you have set it up to. I found it the best as it can take a child leaning on it, it is clear so looks nice & no gaps for little hands. It fits most stairs & expands.
We used a white metal gate one on the kitchen that you have to pull the top thing to release the lock to open, this worked well but my kids figured it out way before they even tried to with the stair one.