Hey folks, Unfortunately, my 2011 17" macbook Pro seems to have suffered a logic board failure. I had been using it along with iMovie '11 to edit 4k videos for a YouTube channel I run (iMovie '11 won't export in 4K but the clips were recorded off an iPhone 7 in 4K). While I will be getting it repaired (genius bar appt. tomorrow), I have been thinking about getting a different machine to edit 4K video with as my MBP lags pretty bad. I can't tell if it lags because the clips are imported in iMovie '11 or because the machine is old. Can anyone recommend the cheapest machine that I could get away with editing 4K videos on with iMovie? I would be fine with going and also buying a $499 mac mini tomorrow but am not sure if that machine would be capable of editing 4k videos without lagging. Any input? I'm fine with buying a used machine off craigslist as well and my budget is under $600 which rules out the new iMacs.