As luck would have it, I'm about a 13.5 shoe. As fellow bigfeet will know, that size doesn't exist. After 12 or so, it's just whole sizes. Because of this, I typically just try on a bunch of shoes and go with a 13 that seems a little long or a 14 that runs a tad small. I had good luck with New Balance until the last couple years when some of the lasts seemed to get tweaked a little. I still use them as my primary shoe, but every time I buy I feel like I start the whole fitting process over. Which brings me to my current situation ...
I got some of the 889s (coincidentally the review by Roger showed up here the next day - confirmed my eagerness to try these out!) and they are just perfectly sized to make me crazy. I ordered 14 wides and they're a tad long. I haven't tried 13s, but I'm guessing they would be fine in the house and I'd wish for more room any time I'm going down hill or putting in long days. Maybe just not THAT much more room.
I know lots of folks here "size up" in their trail shoes - but how much? How much air space between the toes and the front of the weighted shoe? Is there a concern with going to long as far as where the shoe flexes? Any foot issues this can create? I'd normally just take them out on the trail and see what happens, but I can't return these if they've been out on the NW sloppy trails.
How much room is too much (length specifically - the width is fantastic)? How big is too big?