Go to a running shop, get your gait analysed, and go with what they recommend. While you need less control etc off-road, the wrong shoe will still cause more problems than it solves.
For what it's worth, Inov8 usually come up quite narrow. For each shoe in their range there's often two numbered models - the higher number is usually their "comfort" (wider) last.
Think carefully about Gore-tex shoes. If you have warm feet, if you're running in dewy grass, or if you tend to plunge through streams, they're pointless. Membrane fabrics only work if ther outside is dry and the pores unobstructed. So as soon as your shoe gets muddy, they're not breathable any more and if you have sweaty feet, they'll be soaked in no time.
Standard advice on barefoot/minimalist shoes also applies. It may be the latest trend, but it doesn't work for everyone and can be injurious if you try and force yourself into it. Hence, get a gait analysis and see what works for you.
Also, for what it's worth, I run in Mizuno Wave Harrier 3s, and love them.