I like it, Bold and Deca are the only injectables i use anymore, mixed with Test obviously.
All injectable AAS should be taken for at least 12 weeks. Many people believe that due to it's long half-life it's a slow starter like Deca, i personally have never noticed that. At 400mg per week, i typically can feel it's effects in 2 weeks, which is normal for long acting compounds.
400-600mg a week is fine with some Test. I never go over 400mg anymore.
All AAS thicken your blood, Bold seems to increase your red blood cells faster than others, which is why many believe it was originally used for endurance assistance in animals and then humans. I do seem to notice a little more stamina on Bold.
I've never experienced bad sides from it and i've used it at 900mg per week a few times.
It's been around forever and it's a great drug. Also, it seems to help with vascularity, but i have found that to be primarily genetic.