I have been using a pc for years and years now. currently have a dell xps quad-core, 16 gigs ram, 1tb HDD, 1 GIG video card, etc. I have the iphone 5, ipad 1, ipod video and have started to think if i should switch to an imac. How hard or easy is it to go from one to the next? where do i get all the programs for it? do i have to rebuy all programs for it to make it work-i currently use word, excel 2010. i also use firefox and thunderbird. I mainly use my pc for email, facebook, looking things up, etc. i dont really play games or edit. i put my pics in the computer from trips, but not much more. I do keep about 12 firefox windows open at all times, with tabs on each to get to things i want to check or update all time, airfare, webboards, ebay, bank, facebook, twitter, etc. i use ms money and quicken daily for my banking records and bills as well. can i do all this on the mac? if i do go to a mac, which to buy? in the store the 27 looks really nice, but is it needed? i saw the 21.5 new model in the store and it looks really nice too, but now they dont have the 27 to compare the size any longer since the new one is on the way. i currently use a dell 23 HD monitor. if i did go with the 21.5 new model, is the 8gb of ram enough?? i see that i cant upgrade that myself at all, and they want 180 to order it and put it in. i also see the 21.5 has a 5400 rpm hard drive, isnt that too slow, or not?? the apple store does have in stock so i can get one soon if i wanted it. and also, get the mouse or trackpad?? is one better than the other? money is an issue, only in deciding to pay the difference from a 21.5 to 27, is it really worth that extra cost? My dell xps was only about 600 when i got it 2 years ago, is it really worth $2000 for a 27" imac, i only ask because i dont own one or know if its worth the cost, or thats just what they charge and if you want it you pay for it, but if so much better to get the 27, i would rather wait for it, but also dont want to waste the money if not needed. I see now also i would have to get an external drive to put my cd's in the machine on itunes now or anything else, or is it better to get a 2011 model? thanks for any help in all of this!!