I'm leaning towards the F2s or F3s. From the info I'm came across, their quality and reputation is pretty solid. I have narrow feet as well. I am going to go and try them on as well as any other boots I'm interested in. Seems to be the only way. My LBS is rather small so their selection covers about 5 brands. But I've heard nothing but good things about Salomon, now it's time to see how my feet feel about them!