Man, everyone's body is going to react a little different. This was my first time doing SARMS. I didn't really have an issue with any sides I had. In the beginning, I noticed I was a little easier to irritate in the sense that I'd see someone do or say something and think to myself "wow that's annoying or dumb. How stupid" but just the thought. Never felt aggressive or rage or anything. Felt a good amount of energy and focus especially in the gym. I did notice some suppression towards the end, but nothing that caused an issue. My partner was still working fine. A lot of people complain about hair loss. I maybe noticed one or two more strands of hair falling in the shower then normal, but nothing out of this world. The S4 causes a yellow tint in your vision sometimes. It's freaky, but normal and not permanent. For me I would get it for 20 minutes when I first woke up and then at night when it got dark. It did seem to make my eyes suck at adjusting to low light so if you work nights or try to go to a dark bar/club/wherever you may have trouble seeing well in the dark. Normal, manageable, but yes freaky. Didn't feel anything else really. I took a light organ support (similar to N2Guard, but not as highly dosed) and had zero issues since they're really not known to be toxic.
As far as results, they definitely work. Bench went from 225×5 to like 275x3. Squats went from 315x2 to 315x10 and probably could have pushed those both much more. Gained 13 pounds and lost noticeable fat plus I honestly wasn't following a strict diet.
But again, everyone's going to react to these things differently.