Oops, missed this earlier.
Chesham's OK. Parts of it are nice, parts are distinctly not nice. The part called Waterside is not very nice. But it's next to Amersham - and the old part of Amersham is absolutely lovely. Chesham isn't really a village, nor does it have that feel - more a large town. The high street would have pretty much everything you'd need and there's a Waitrose in town and a huge Tesco in Amersham, so it's convenient. There's a tube stop in Amersham which is nice if you have to commute to London. There are three GP surgeries (it's pretty populous) two of which are moving into one new building that will be quite nice.
I personally wouldn't choose it (there are a lot of much nicer villages in the area) but I can think of worse places.
ETA: I lived in south Bucks for six years, work in High Wycombe, and now live further north (still Bucks, but closer to Oxfordshire) and my job requires me to travel all over the county so I know it pretty well - happy to discuss further if you want to pm me.
