I bought my Galaxy Gear less than a week ago and I already love it.
Before buying it I was worried about the bad reviews and honestly lost interest since the Samsung store here was taking forever to get stock.
Well when Samsung called me and told me they finally have some, I went checked it out and bought it last week.
Getting notifications on my watch has been one of the best features for me, the ladies don't get pissed when I'm out at dinner checking my phone every 2 minutes making me look bored or not interested.(though I guess looking at my watch isn't much better)
I'm happy with it, wore it to work and co-workers noticed the new watch and said things like "new watch? looks nice." not knowing it it was a smart watch they pretty much creamed their pants when I showed them what it could do, then a call came in on the Gear before they knew it could take calls, I answered the call on the watch and the whole office pretty much burst and exploded in disbelief, shock and envy. Now everyone in the office wants a smart watch.
$300 seemed kind of pricey before I bought it, but considering I have a $6000 Rolex that does nothing but tell time and pick up chicks, Galaxy Gear wasn't a bad deal.