Hard to disagree with Woburn being top of this. Some prefer The Marquess, but I think Dukes is still the classic Woburn course. Stoke Park is a slightly controversial choice. I like it (the original 18 at least) but there are detractors.
i was a member of Gerrards Cross for a few years. It certainly used to be a par 69, with 4 par 3s and just a single 5, but a good test at almost 6300 yards at that par. Some interesting natural holes following the land.
Not sure about The Buckinghamshire in 5th. I thought it was rather soulless, a big money course built with so-called Championship aspirations but not that many great holes.
Farnham Park is in a respectable position for a budget priced council run municipal. It is directly across the road from Stoke Park and used to be the ladies course, I believe, so perhaps it has good pedigree underneath its current modest standing.