They are too new yet, so there is no conclusive information on their effects, be they good or the side effects. I would stick to the time proven SARMS, and wait till there is more information on the RAD140 and SR9009. Personally, I have never seen anyone using them yet, so I can not tell for sure about their effects and safety, since the online reviews from people I don't know are very contradictive. However, if you want to act as a lab-rat, then you may as well try these out, but I would not do so - it is your health we are talking about here.