How are they for you size wise? I'm after a pair of Uno's but I cannot decide what size to go for! I'm 5'9" but pretty skinny (8 stone 10, 34" chest, 29ish" waist). Going by their sizing I would be a large but I really can't imagine large sized cycling gear fitting me (smalls are often too big!). I'm leaning towards a medium but will they be snug enough width wise and in the chamois area?