Hi, I found a 13" 2012 Macbook pro for sale. The guy wants $800 for it. It is an i7 with 8GB ram and 750GB HDD to the standard non-retina model. I was wondering whether it was wise to buy now upgrade the HDD (Maybe to this one: http://www.amazon.com/Samsung-830-Series-MZ-7PC256N-Internal/dp/B005T3GPXY) or wait for a MacBook Pro with Haswell and possibly even retina. I am a student so my needs are not too intensive and I do not need the latest and greatest. Also I am migrating to Apple so I want to make the switch as cost efficient and future proof as possible. I plan to run it with a larger moniter at home (possibly this one:http://www.amazon.com/gp/product/B0...tiveASIN=B00AAZ470Y&linkCode=as2&tag=su0ab-20). Any advice on time to buy/upgrades to make/things for a migration into the apple ecosystem are more than welcome. Thanks!