Hello everyone. I have a late 2009 i7 iMac with upgraded graphics. I have installed a 256GB Crucial M4 into it and it's pretty peppy.... however, I'm tempted to upgrade to the new 27" since the new cpu and graphics are a LOT better than what I have and would be nice for gaming and video encoding. Is it worth it to spend $250 on the Fusion drive when in some areas (such as moving large video files around) it will be slower than a pure SSD? Would a better option be to put my 256GB M4 into an external enclosure and try to hack together my own home brew fusion drive (assuming I ordered the 27" with a regular hard drive) using Thunderbolt? Is that even possible? Honestly I'm a bit miffed about the drive choices on the new iMac. Traditional hard drives are slower than dirt but the only pure SSD option for the new iMac is outrageously priced. I would just buy a $400 Intel 520 and slap it in there but it doesn't look like the 2012 iMac is as easy to do this with as my 2009 model. Thanks.