I am looking for a new machine to be my main workhorse. I do a lot of video editing and I need somethig that would handle large HD files with no problem, I will not do any 4K editing or sth like that though. I leave usually computer turned on to do rendering over night at least two or three days a week. Now I dont need portability as I have that covered but on the other hand I used to have Macbook that I used as a desktop. I am intrigued by expandability of Mac Pro. I do not need great GPU as I deal with 2D video mostly, for example having a RAID solution for backup purposes is more important to me. The only thing Im worried is the value. I think I could get a used Mac Pro 2009 model with 4G RAM and 1TB RAM for less than 1000 USD (maybe 800), the version with two CPUs on 2.6GHz. I'd like to put in at least 16Gb RAM,128GB SSD for OS and another 1TB drive to RAID it with the one already present. On the other hand I could get 15" non retina MBP base model that I'd upgrade to 16Gb RAM after purchase and eventually get SSD for OS (and put HDD instead of ODD in it). I'd get i7 processor that is probably as fast as the one in MP,Thunderbolt and USB3. It would be attached to external display and keyboard 99% of time though. I cant decide,can someone please offer their view on the value of used MP? I was also thinking about getting Mac Mini server and maxing RAM on that thing (which is 16GB but I'd like to utilize 32GB one day which I think is possible on 2009 Mac Pro).