In reply to DaveR & Stig:
My Tomtom Runner watch arrived on Wednesday afternoon. Initial thoughts were that it's a little bigger than I thought as the solid part extends around the wrist a bit but it's comfy enough to wear while running. I got it set up fairly easily and did the usual updates etc, then took it into the garden where it found a GPS signal fairly quickly.
I went out for a run locally last night and it picked up a signal almost instantly while I was still faffing around with my shoes and stuff. The display is big but only shows limited information on a single screen - the initial screen was the time (big) plus distance and duration I'd been out (small). You can cycle through the screens if you want to change the main display. It had all the usual info - time, distance, current pace, average pace and calories. It didn't buzz at me as I went through the miles like the Garmins do though.
When I got back and plugged it into my computer it brought the Tomtom runner site up immediately and exported my information automatically. It's not as sophisticated as the Garmin site but has all the basics. You can export the data into various formats (GPX etc) to be able to upload onto other sites - I don't do Strava so I haven't checked how easy it is. It didn't give me total moving time/pace though, unlike my partner's Garmin, so if that's important to you you'd need to manually stop it when you stopped.
Overall I'm pretty happy with it. I was after something cheap and cheerful and this fits the bill for £60.
ETA: Apparently it will upload automatically to Strava but I'm too lazy to test it...
Post edited at 16:33