Hotshoe Action: Apollo vs Ezybox (clone) Comparison

Reasonable hotshoe softboxes only really come in 2 favours - the Westcott Apollo or the Lastolite Ezybox (incl the ebay clones). When I was trying to decide between the two, there wasn't really much consolidated information, so here's the science - Apollo 28" vs Ezybox 60x60cm (24") single diffusion panel clone.