the option looks like to try either the 455 or the 555, as both are good for the money, and play with it a bit at O/Cing and learn the ropes a bit more as thats what I want to do, i want 4g lol. If the chip unlocks to a tri or quad, brucey bonus, keep it as it would be futureproof for a wee while, if it does not unlock then sell an upgrade again in six months/year or so once I've played with it a bit? I am sure the 455 and 555 will also be able to handle black ops combined with my 4850xxx ??