If you're still on the fence, why not wait until October ish. There is a huge influx of new games starting late August through to mid November. If you like a lot of those, you can pick one up and hit the ground running with a load of new games - plus pick up the odd game since launch that's decent.
If I didn't already have one - I'd be looking at Destiny time to consider it, but if you're not too fussed on that then the rest start coming a month or so later.
In a 6 week period there are more games coming that appeal to me than I've seen since launch