I do not have any experience with the ReSound, but I did trial the Pure Charge&Go and liked it very much. I found that I could hear surprisingly well in noise and that speech clarity was very good. The only reason I didn’t keep it is because Signia has come out with an upgrade from the AX to the new IX. I’m currently waiting for my audiologist to get one in so I can trial it.
I should note that I didn’t like the Pure Charge&Go AX at first, but only after I went back to the audiologist to have the settings tweaked. So I would concur with the recommendation to get a good audiologist.