i like watching movies online and disc. now when i ant to the apple store i saw that the new iMac which i was hoping to get to replace this one with had two major differences. one it had a LCD screen rather the high quality LED screen which my current unit has. two it had no disc drive for movie watching. the only thing which is still the same is it's less prone to viruses part. so as a result i had to consider a pc were i can pick my screen and has a disc but is more prone to viruses. i also do photo editing so what's best for me mac or pc.