When I'm in a vagina, I can feel it all the way along my length, and it seems to draw me in. Anal sex may be tighter but it's just like a tight hole; I don't feel it so much once I'm actually in. Also, or perhaps because of this, a vagina is generally much more dynamic and almost reactive - it can squeeze, move with me or against me, or at least its owner can make it do so. The softness, warmth, tightness and wetness of good vaginal sex is indescribably good (to me), but that's not very helpful, I guess. Perhaps the best way I can put is that tt can almost feel as if my cock and her pussy are melding into one.