Potty Seat vs. Potty Chair

Hadley has started to tell us when she needs a diaper change and when she has pooped. Now that she is aware of that, I would like to buy her a potty and start putting her on it a couple times a day to see what happens. No pressure, but I want her to get used to it.

For those of you that have started potty training did you go with the potty seat or the potty chair and why?

I like this potty chair/bench for the functionality (also can be used as a stepstool) but I've also been looking at this seat because it seems like it makes more sense to get them used to the real toilet.