We are ready to buy the 27 inch i7 and I jumped on this forum and by all the negative posts about yellow tinting, loud HDDs, sparking and humming usbs and plugs scares the crap out of me and makes me wonder if its even worth it. We are wanting to replace our windows desktop but all the negativity is making me wonder Im better off with my pc..I mean some of these guys have had to exchange 5 or 6 iMacs..Ive never had to do that with a pc. The reason Im switching to Apple is due to the supposed superlative engineering,design,etc but these forums make it sound like apple is just as sucky as windows world. Please convice me to continue to pursue apple. We love our iphone and ipad and assume the rest of apple is the same or better.