I tried several PHs now (if you are looking to run a PH). Helladrol x2, primo dex, ox, and epi are the ones I have used. Sarms have been GWx4, S4x2, MKx2, and LGD. I am not a person looking to gain mass nor go on a huge cut, but want to gain as much strength as possible. I am similar to you in the aspect. okay.. My first cycle was with Helladrol and I gain a ton of strength (my receptors were virgin.. something to consider). The second time was Helladrol still saw some good strength gains but I used GW and S4 with the cycle. next was Primo Dex, S4, GW, and LDG saw some good gains not sure as much as Helladrol, but my receptors were not virgins to the PHs anymore. OX is what I am current using and it seem to be keeping my strength up while losing some fat. Strength is going up not has fast as before. Looking to do dainabulk in the up coming months to see how much strength will increase, so that is my two cents worth. I hope that helps
right now I would do for strength gains that I have done:
Helladrol
S4
LGD