hi! i'm getting a 27 imac with ssd. however: if it's the 4,2 i7 or the 3,4 i5 i don't care. (will be using it mainly for audio production without lots of plugins). so i was thinking: if i'd ever need/want to sell it, which one loses more $ in worth in the next years? (seeing it more as an investement) should i get the most basic 27 or the totally maxed out version? (capital is there) thank you!