I bought a wheelchair from Wheelfreedom in the summer.
Be prepared to look independently. They seemed very keen for me to try a particular model which I quickly knew was not for me. I had to be persistent in pursuing my own choice, maybe because the staff member we were dealing with struggled in erecting the chair of my choice. We were allocated a particular member of staff and he didn't seem to know the whole range. They found another staff member to help but our own staff member was responsible for us and was involved with us through to purchase.
Try it as much as you can. There is a tarmac path outside with a dropped pavement. We were able to cross the road ( there is almost no traffic) and try it on the small slightly sloping area of grass if this would be a feature you wanted.
To be honest I was not sure how " approved " this was. We asked to try and they agreed but they were happier with us crossing over to the grass across the road which we did. This was in June/July when the grass was dry.
We didn't buy on our first visit but returned after allowing it all to sink in. There are lots of features to consider as
@Kitty described. Last year we bought a new scooter (not from wheelfreedom) but almost immediately knew it was wrong. Holding out my arms was awful for my ME but wouldn't be a problem for others. An expensive mistake.
This time I am thrilled with our choice of chair.