Following the announcement of Mountain Lion today, I realise that I won't be able to continue with my current Macbook for much longer if I want the new OS, as it only has an Intel GMA X3100 chip. I've already decided I want a desktop as will probably end up doing a lot of video editing and processing, so I need something that packs a punch, and I'll probably want to play a few games as well, so it has to be reasonably high end. Here are the options I've come up with so far: 1) Custom Built Machine: This seems so far like the best one. I don't have huge amounts of money to spend and I know I can get a kickass machine with the latest processor, memory, SSD and graphics for within my budget (about $800). I've never built a computer before, but there are some great video guides around so I reckon I could manage it. I would then install Mountain Lion on it, but I have a question regarding this. If I were to clone my current HD onto an SSD, and put that into my custom machine, would it work as normal? When the time comes, would I just be able to upgrade to Mountain Lion through the Mac App Store or would it require some complex Hackintosh type manoeuvre? If so, I might opt for one of the next two options, even though have a custom PC is a very tempting option, especially as I might want to install Windows 8 on a separate HD when the time comes as it looks pretty impressive with the new UI. 2)Mac Mini: The new ones have some pretty impressive specs, but I still know I would have to compromise in that regard compared to a custom machine or a second hand Mac Pro. The other problem would be getting the stuff on my current HD over to the Mini but I'm pretty sure Apple will have that problem covered when you set it up. It's a while since I've set up a Mac so I can't quite remember what happens regarding transferring all your files, applications and content. 3) Second hand Mac Pro: I've checked on eBay and the cheapest ones sell for within my budget, and they would probably deliver the best performance. What's more I can upgrade almost everything about it, something which is very useful and something that I can't do with the Mini. And it's made by Apple so I wouldn't have any potential complications with regarding to installing Mountain Lion. I'm off to uni next year, and I probably won't actually buy anything until early summer, but I still want to hear what you guys have to say.