I got the E with a dual. One of the later MGS bundle Es. Bought new, never sent to $ony.
as far as i know, the cechg was the model they started introducing the dual laser, like how you believe, shaky99. i've repaired more than 50 ps3s over the years, all friends of mine, and every single one that was a cechg was a single laser bluray. none of the ceche were ever dual laser. since there are TWO generations of 40gb ps3s released, cechg & cechh, i believe that all cechg was single lasers and all cechh were dual lasers - consequently, all ps3s after cechh were dual laser