Hey on recent sales of SSd's i copped me a 256 samsung 830 for 150 bucks on anticipation of putting it in my new 21 inch imac. that being said i dont wanna shell out money on a bto 256 ssd which will probably run me 350 bucks "aint nobody got time for that". is this new imac gonna be completely fort Knox or am i gonna be able to do this upgrade myself?