4 Pro with no plans to upgrade yet. I can live without the dynamic hair and clothing in 5. The raytracing was about the only addition that interested me and I have been saving for a decent 3D app that I can import into and render.

Expert in computer code including, but not limited to, BTW; IIRC; IMHO; LMAO; BRB; OIC; ROFL; TTYL. Black belt in Google-fu.