I'm in a unique position in that i spent an hour yesterday afternoon at my local UO (Vancouver) trying on all the different styles of these jeans in a couple sizes each
hopefully i can shed some light to those trying to order these online.
Originally i had brought home a size 32 in the Skinny cut, but after looking up the brand and seeing everyones comments on here i decided i should go back and try on the rest of the fits and a few different sizes of each one
i'm 5'10, about 155 lbs and have thick-ish thighs (nh)
at the UO i went to they only carried even sizes in this brand
these are very tight in the waist, i am about a 29 waist and i could barely get the top button done up on a 32 in these. they are also looooong like i'm talking 35-36 inseam. they are skinny but not in the way that a Cheap Monday is skinny, they are cut super close in the thighs but then are almost a straight leg from knee down. in my opinion these should be left to dudes 6' and taller or skinny kids who wanna cuff or hem them. these you gotta TTS or really really consider sizing up.
The Straight (or Slim Straight).
these fit pretty true to size, a 28 was tight in the waist on me and a 30 was an inch too big, but these are very roomy in the thigh and are not tapered at all down the leg (obvi) they have wide leg openings and to me this cut most closely resembles a 501 (atleast the older, baggier model that i have), these are probably a bit baggy for most people on this site though (and from what others have said this denim doesnt stretch much, so sizing down to get a better fit might not work so well) they are a 34 inseam.
these are probably everyones best bet, slim thru the thighs and then tapering after the knee. i ended up choosing this cut in a 30 and i am pretty happy with it, it would be nice if they had a 29 for me to try but i think it may have been tighter than i'd want thru the thigh. you could definately size up or down on these to achieve a decent fit (within reason, given the limited stretching out) these are a 34 inseam and holding them from top down are about 1.5 inches shorter than the Skinny.
Other things i noticed.
seems there are 2 versions of each model floating around as well.
The older versions have a white tag on the right beltloop denoting the style and size in small writing, they have double orange seams down the inside leg, the denim also seems a little less stiff and slightly lighter in colour. they also may have slightly larger measurements (i could fit a 28 in Tapered in the older style but not the newer type)
The newer versions have a colour coded tag denoting style and size in large font (red for Skinny, blue for Straight, green for Tapered), they have one orange and one dark blue seam down the inside leg (yay!), the denim is dark and stiff but each pair seems to have a slighly different character to the colour.
LEG OPENING IS RELATIVE TO WAIST SIZE!!
what this means is, is that if you are looking for a small leg opening, and you get the skinny and size up so it will fit you, you will end up with a larger leg opening than if you had TTS or sized down one on the Tapered. how i know this is that the size 32 Skinnies i first brought home had about a quarter inch larger leg opening than the size 30 Tapered i ended up getting, the size 30 Skinnies had about the same leg opening as the Tapers though. and again the Skinnies are about 1.5 inches longer than the Tapered
The one thing that could make ordering these difficult is the fit, each PAIR seems to fit slightly different, which isnt necessarily a bad thing if you are able to try them on first but if not you kinda have to just hope for the best. once i found the style and size i wanted i tried on 4 different pairs of the Tapered in a size 30 and each one was slightly different, maybe it had something to do with them being stiff but i felt like each pair fit a bit different
The Skinny seemed to have the stiffest denim, the Straight and Tapered were about the same but the Skinnies were noticeably stiffer.
hope this helps
p.s. here is a pic of my fit