Any question answered...

What has brought on this change of mind? I am going to fit my cadence tomorrow to make it all about spinning. I would guess if you have a bit of time you should be able to get a 705 for £150.

What change of mind? Garmin hating? ;)

I still hate them, but I have realised I don't really have the time to do thorough Google streetview reccies and make proper ride notes. Ridewithgps + Garmin I do have time for. 705's go for c. £200 on eBay, second hand. 605's go for at least £100, so it doesn't seem to make sense to buy them second hand.

There's no difference between the 605 and 705 except stuff I don't want, so the 605 seems like the better option. Unless the new features of the 800 win out...