Wow

Should have bought this thing a long time ago! Wow!
First of all the games. Wow! Was not expecting it to be this powerful. I have a Galaxy S4 and is considered to be pretty top of the line for cell phone gaming, and it puts out really gorgeous 3D graphics, but this Vita just stomps a mud hole into the S4. It's very much like having a ps3 in your pocket with all the bells and whistles. Then there is CONTROL.
Gaming on a cellphone (anything other than a simple interface like candy crush), driving games, action games, shooters, is kind of like having sex without a partner. Something definitely missing. Swiping the screen gets irritating and is just not ideal. Vita gives you that full on, twin analogue stick experience, and the control is just oh so accurate and lovely on this thing.
Features are great, this device does everything except make a phone call, and many of the apps I found to be superior to the phone version such as Music Unlimited.
The connectivity is great, you get multiplayer with voice chat, everything you'd expect with a full tv console!
Games. Played Killzone Mercenaries which actually stunned me by how good it plays. I just beat KZ3 on the ps3 in anticipation of Killzone Shadow Fall here on the ps4 in a week, and this handheld version might actually be better! Frantic, exciting gameplay, great AI (

) for a handheld, and just...GORGEOUS graphics, ps3 in your pocket indeed.
Also have Uncharted, Rayman, Wipeout, Tekken, and some other stuff haven't tried yet, but it's all the same. Fantastic!
If you enjoy mobile gaming but want a more complete experience and hate using touchpad as main input, you want sticks and face buttons and a d pad, etc, this is exactly what you're after.
Battery life is an astounding 5 hours at max brightness, online connected, in game. Sony magic there.
5/5 incredible device! Came for ps4 remote play (run you ps4 on this Vita via wifi), stunned by the capabilities of the device on its own merits, and not just as a small ps4.