Vivofit 3 and Vivofit 2

So, while waiting for the Vivofit 3 to come out, the budget got a wee bit tighter.  Suddenly the older product that's starting to see clearance sale prices is getting more of my attention, so I thought I'd do a comparison.

	Garmin Vivofit 3	Vivofit 2
Price	$99.99	69.99 (Amazon, Best Buy)
Expected Release	Any Day Now...	Available Now
Wrist Band	Molded rubber, and fashion rubber, but the tracker pops out so we might see 3rd party wristbands in the future.	Same
Battery Life	1 year, replaceable battery	Same
Display	64 x 64 pixels, 0.39" x 0.39", watch orientation	Segmented LCD
Water Rating	5 ATM	Same
Watch functions	time, date, calendar, and audible alarm	Time
Auto activity sensing	"Automatic activity detection"	None
Heart Rate	ANT+ Heart Rate Strap compatible	Accessory
Phone Notifications	No	Same
Sleep Tracking	Yes	Same
Android Phone app, BTLE	Yes	Same

It looks like the only major advantage the 3 has over the 2 is automatic activity detection.  Automatic activity detection sounds like a really nice feature, but being new it's hard to say how accurate it will be without letting other people try it out for a bit.  I very rarely "go for a run" and if I do I can track that with my phone as easily as with the wrist strap.  "Daily Steps" is tracked outside of "Timed Activities" so I don't ever have to use that feature (and even if I do it just means I need to press a button...)

I'm still postponing a decision until the budget clears, but if these clearance deals are still available then I think I'll consider it.