I'm a 34 in Levis 501's but sized up to 36 in the Momotaro 705's. This was due to the upper thigh of the 705's being too tight. The rest of the jean fit well in the 34. The 705's are as Jay-D noted a tight straight fit where as the 201's appear to be give you more room in the thigh. I would probably go TTS in the 201's. I'm an average build not skinny/slim. Keep in mind that while the silhouette of these two are different, the 705 also is one-wash (sanforized in case of 0705BiG - Whatever123 didn't get any shrinkage after soaks) in comparison to the 201, who they claim is semi/half/partially sanforized, but will shrink like any other STF jean.