For stubborn prostates: Variety of toys or ride the same one for success?

I have been practicing prostate play for 7.5 years and I have yet to experience anything really all that close to a prostate orgasm. I have a variety of toys, the Helix (regular Trident and Syn V), Eupho, MGX, Maximus, Progasm, Peridise, some glass dildos, and a Snug Plug.

My general strategy/preference over the years has been to use a variety of toys and choose whichever one I’m feeling that day. I have noticed, however, it seems my Helix Trident (regular plastic version) seems to give me the best sensations.

So, my question is…for my stubborn prostate that is slow to join the party, is it possibly better to pick one toy and be consistent with it over a long period of time? Then, I could add more variety of massagers as the pleasure increases and sessions get easier? Let me know what you guys have found success with!