Mates Skyns for me too; took a box to my regular so I know she's always got them, but whatever brand they have to be large. I find regular too restrictive and more likely to split. Not sure about sizes with different brands but I used a Durex King Size with a WG recently and it felt as good a fit as Skyns Large.
Was given an awful black condom by a WG once, don't know what brand but it was like a welders mitt on me, no feeling whatsoever and very thick.