Are you specifically going from Portsmouth, if so the the only ones you can get are Wightlink. If you can travel then you've got Red Funnel from Southampton and Wightlink from Lymington as well
we've just booked on the wightlink ferry for £63. (return) not bad ay.
we thought it would be much more than that, so were happy with that price.
thought you'd like to know -- thank you all x