Ok a_chap here's my experience
I bought a 3-speed Brompton 8 months ago, cycle on it 4 miles a day (at either end of a train journey into London, so no more tubes or walking)
I genuinely LOVE it. More and more each day. It is solid, brilliantly engineered, fast and has good gearing. You soon get used to the small wheels
It is my favourite thing I have ever bought
I know Editor loves Dahon, the only Dahon rider i hvae spoken to since I got my Brompton told me he wished he'd got a Brompton as his Dahon keeps going wrong
Mine was £950. It includes rear luggage rack (v handy) and Eazy wheels (2 extra tiny wheels, adding to the two standard tiny wheels which mean you can push it along very easily for example on train platforms etc)
I now use it nearly every weekend for going to the shops, library etc I love it
I also love my full size bike on weekends but could happily survive just w my Brompton