I've run it twice- current cycle and a 10-week run a few years ago. This cycle I'm running it at 500mg with 500mg test for 16 weeks, and I'm having excellent results into Week 11. I feel strong, energetic, and vascular, and even put on some great mass despite this being primarily a cutting cycle.
When I ran it for 10 weeks I didn't get too much out of it because I think it really starts to shine after Week 9. So far no noticeable side effects, even blood pressure is in normal range and I'm able to do even more cardio. I think it's certainly more mild than Deca as far as mass gain is concerned, but I prefer more lean and solid gains over time to instant water weight. Not to mention Deca blows because of hardcore shutdown, gyno aggravation and a bloated moon-face.
So it gets my thumbs up