Not allowed to link to competitors, I got a Flexus electric sit stand desk. It was on sale at the time, and I found a voucher for the same company, bought a £350-400 desk down to about £170 in total.
It's quite a small top, but at least where I got mine, you can select the desk size you want. It takes upto 100kg spread over the surface I believe. No presets, but to be honest, for the sake of holding down the button for 10 seconds (probably less), I don't miss them, certainly wouldn't pay much more for them.