Winny- Dryer gains, sore joints and bad liver/cholesterol comparatively
Anavar- Didn't dehydrate me like Winny, alleviated joint pain, targets visceral fat in studies, build collagen tissues (think cartilage repair)
I've ran both at 20mgs/day with nice results. For Winny I made it 7 weeks before joint pain cut it short, with Anavar I went 11 weeks and it was really nice. I think the 'Var healed a lot of damage.