Cardarine is pretty interesting. Ive used it many times, 10mg per dose. My favorite pre workout combo i e ever used is cardarine, albuterol, citrulline, and yohimbine. Just throw some cheque drops into that mix to have all the bases covered (never done it, but aspire to try the combo someday).
I find cardarine gives me unlimited endurance. I use it occassionally on its own when freediving or surfing, hobbies of mine that really test your endurance, it definitely makes a difference.
How does it pair with AAS cycles? Im less knowledgable on this aspect. I recall guys on tren were loving it to offset some of the sides but maybe im recollecting wrong.