I want to spend around $500 on a new desktop, since right now all I have is an ancient 1ghz eMac. I'm looking at two choices: My school is selling new Mac Minis (1gb RAM) for $479 + tax... or... I found a guy on Craigslist willing to sell his dual 2.3 G5 with 2gb RAM, some dual-DVI ATi video card, Apple aluminum keyboard, and mighty mouse, for $450 Now I'm kind of conflicted. The Mac Mini is probably the most practical for me, since it's small and fast. But I really, really like the G5 because it's so easy to work on and has pretty good expandability (for a Mac). Also, dual screen capability is nice, and the price is better since it would be $50 less after tax, plus it includes a nice keyboard and mouse. I'm really not looking for fast performance, but I'd like to be able to watch Hulu/Youtube at full screen without lag. I do research and I'm an engineering student, so all of my real work is done with less demanding programs like Matlab, Mathematica, Grapher, Pages, Office, etc. What do you guys think? Is the G5 going to be too slow for smooth Flash playback? On a slightly pathetic note, isn't it strange that watching online videos is somehow more demanding than unraveling the mysteries of nature with Matlab?