In reply to andymac:
Much the same as my thinking. I've had a 230 for a few months and love it.
- I had a 110 prior to this and the 230 is waaaaay faster picking up a signal. in fact the 110 is woefully slow at times
- bluetooth syncing with my phone is absultely crucial to me and mostly works perfectly (never 100% with Garmin!)
- the extra 'analytics' that come with the 620/630 are not useful to me and the 620 in particular is a good bit bulkier than the 230
- the notifications are surprisingly useful, I can check if I have urgent emails from work, more importantly texts from the boss
, and immediate instagram feedback if I'm out for a long run (vain I know)
- it vibrates as well as beeps on the mile (110 only beeped and I'd often miss it) - I like to monitor mile splits
- I like the adjustability of the screens and other info like Vo2max etc.
- the chest strap is much better than earlier Garmin ones and like you I wasn't convinced by the optical wrist monitor (according to the reviews)
- did an ultra on Saturday night and it lasted 13 hours in use - I haven't charged it yet and it still isnt on low battery
- I think it looks ok too, better than the 110, it's quite subtle