rogerd - 2:44 pm on Jul 3, 2012 (gmt 0)
Any time you can shorten the path to conversion, you'll sell more. Why take a customer to the page he requested and then force him to make one or more unnecessary choices?
One-click to buy is really what you want.
Of course, the dropdown is still there, so if the customer reads a review that says, "shirt runs small, order a size larger than usual" he can still change his choice.