There have been several guys on here that have done winny only stacks and they loved them.
50mg/day is the least amount I would use either stacking or not. Like the guy above said, winny was made for stacking.
Anyways, I digress...I keep hearing about guys doing 100-150mg/day and they say their results are phenomenal with great lean mass gains and strength gains. The problem they have run into were the joint pains. If that happens, take deca, deal with the pain, or get off.
I think if you do a 6 week cycle of 50mg/day, you will be pleased with the results, and that would be my recommendation if you are wanting to take winny alone.