Your maybe best waiting for an answer from someone who specialises in prostate milking.
Only experience I have with a guys anus is shoving my finger up DRY (with nails) to a guy who asked for it when I was on holiday once when I was 19 I think so I'm not the most skilled at the job lol.
But to answer your question, I think any vibrator would do the same job. The only thing about the sybian is that you can straddle it which I think would be amazing for a woman and because it also has a vibrating bit for her clit at the same time.
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