Tricky question
Everyone is different weights,different aches n pains ,so different needs
The Genmar and GB moto 19mm risers do make a difference for sure,but,for some people,me included,it wasnt enough

I fitted the bolt on to the yoke type which are readily available.
Raise your bars 19mm up the forks ,and tighten (obviously)
Run like that for a few days or weeks,if that height suits you,buy gb moto or genmar,if you need more height you would need to buy bolt on risers and change the bars .