if you "trust the science" everyone should use it, regardless if they are lifting, because there are cognitive benefits as well.

i just use a brand called force factor that i pull from amazon. its not going to be as "clean" as some of the top brands, but its good enough, and we arent really competing for anything other than being a better version of ourselves. ive never had any ill effects from it (i.e. stomach). but like anything, if you want to spend more, you can get something "cleaner"; i just dont know that you or i would notice any iota of difference.