so how to rate the sensation?

Without the ‘head popper’ option which I haven’t tried yet, I’d say the sensation difference is not ‘mind blowing’. But it IS better by some degree. Of all the tinkering I’ve done I’d say this Stroke Sleeve and the Handsome mouth extenders mentioned in another thread are the most effective two improvements I’ve seen to Venus. As I’m pretty ancient and have lost a lot of sensitivity in my organ I’d say I’m a pretty discriminating tester. Always looking for something new to try.