Looking in from the outside, they both look near identical and opting for the cheaper will likely be as good.
From dealing with adaptions for my mum, I found ringing, rather than emailing was by far the best way to get information sent across.
P.S the 9 way Techmobility is the the one at top of page and Bever group 5 or 8 way lollipop stick controls at bottom of page.