Hi all. As some of you have already given me great advise you will know I recently ordered a 21.5" imac with ssd and 16gb ram (ott for current needs). As my current build has an estimated time of 2-3 weeks! It occurred to me I would actually be better of with a base model 27 with ssd (educational discount). Im based in the uk and crucial have 16gb of ram available shoukd the need arise for this much in the future. Can anyone confirm that these kits are OK?! Also they have ssd kits available however im tempted to to pay the apple £50 premium unless its a very simple install? Are there other issues I should be wary of? Im sure 27 is too big but will grow on me. Cheers!