I have driven both tip and manual. And yet to get my own Boxster.
I prefer manual. However, I also am considering a tip due to the reason so that my wife can also drive it. I mean my wife can drive a manual but I think the clutch of the Boxster is quite heavy for her (this opinion is based on the manual Boxster I've driven).
But if this is just for yourself, go for the manual. It's more fun.
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