Hm.In terms of people who actually play the 4 position (as in, not any 4s who are playing center), I'd say it's something like this...DirkGasolLoveLamarcus AldridgeGriffinJoshJosh, Griffin, and Aldridge are all pretty interchangeable. Come playoff time, I'd still take Duncan, KG, and Bosh over him, though they have started to play center more. And I might take Horford at 4 over Josh too (not trying to start that debate, just stating an opinion).There are a bunch of solid 4s in the league now.