Garmin S10 v Bushnell Excel v ...?
The S10 seemed an obvious inexpensive option. It has a replaceable strap, after all. But wait! That strap might be replaceable, but only with a proprietory Garmin strap at about 25 quid
I ended up with a Bushnell Neo Ion2. It does the job and it looks like a standard watch strap will fit if the original breaks. The display is a bit rudimentary with a blocky font, but it provides the required info. Also comes with free access to a smartphone app that gives detailed hole layouts.
One other thing that I never checked: does the S10 have worldwide courses? My old S1 didn't have American courses, so it was useless when I went to Florida. The Busnell has worldwide courses.
The only other GPS watch in the same price range seems to be the Shot Scope v2, and it appears to come with a load of clever trickery, but I didn't really want to get involved in all that sort of stuff.