Which version of Satisfyer pro 2 is the best?

There are three versions of Satisfyer pro 2 that make me kinda confuse: Satisfyer pro 2+, Satisfyer pro 2 gen 2 and gen 3. The gen 3 is the most expensive one, but is the feeling it brings worth it because I don’t care if it can connect to apps or not. Which one feel the best please tell me.

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