I prefer in between. I do not like skinny men, body shape. I also do not like the bulging biceps and Mr. Anmerica looking body shapes. I like inbetween. Nice figure, not too heavy, well toned. That does it for me!!
I don't like big muscles at all. It's a really turn off for me. A guy is really skinny would also not be attractive to me. Honestly though, the personality is much more important to me than the way they look though.
I am a girl, and I prefer the one that looks ok on the eyes. I don't like someone who's viens stick an inch off of his arms. Its just not practical or attractive to anyone for that matter, just not normal.