I actually ran into the guy at the Chevron after he got tuned, can't remember his name but he said he showed up at Intec and they stayed late to get his tune done and not just rush through it, even though he didn't have an appointment. He had to get a hotel in town and drive back the next morning but seemed stoked to be able to get tuned
I've never been to Kito so I can't speak either way for their tuning, but from what friends tell me and their website they seem to specialize in Subarus... A little different to tune than Nissans. When I had questions about tuning my G35 back in the day Lawrence was more than helpful, even brought out his laptop and showed me the fuel maps and whatnot and explained how the tune makes a difference.
Nissan really upgraded the motors for the 370's, so you won't see massive top end gains like the old VQ35DE motors, but you'll gain a lot of responsiveness and smoothness throughout the powerband. No more hickups or jerkyness, just strong pulling all the way to redline. And better gas mileage as a benefit