Only just joined Runners World after finding your post regarding the Inov-8 F-lites and trail-rocs. I have exactly the same dilemma and was wondering if you made a decision between the two?
I started with a pair of Bare-Grip 200s for orienteering which are great; though find that for everyday training, that involves a mixture of road, gravel and mud, there is too much grip.
Therefore, I want a pair of inov-8s that can deal with more hard pack terrain without a load of bulk and support (can't go back from barefoot running after using the Bare Grips- which are AWESOME).
After visiting a store the sales assistant gave impression that F-lites were solely for X-over indoor gym use- not for trail, and proceeded to recommend me the FLYROC 310s which were way too bulky and insisted there was no point in trying the F-lites.
Even the brochure says the F-Lites are for 'sprinting, wieghtlifting, rope climbing and gym work'- however most user reviews cliam they're perfect for trail?!
I'm really confused and would be greatful if somebody could shed some light?