I don't think you can really decide at this point. You can never really judge which is most pleasurable until you have experienced both, no? Or at least know what they have to offer. Currently, I agree. But in the future, who's to say?
I can readily imagine sexdroids offering options flesh-and-blood partners don't, such as targeted neural stimulation designed for optimal pleasure, and fully customisable features which can be adjusted to fit your mood. Sex with a flesh-and-blood partner can certainly be pleasurable (though it can be disappointing also), and perhaps with an android or gynoid (or something related) it could be very pleasurable as well. I definitely see potential. Especially if eventually there comes a technology which lets us design sexbots made from realistic (or real!) flesh and tissue, with customisable open-source software.