What is better, X58 based system or P67?
I might just buy a prebuilt one, as I've never built a computer before.
In terms of MB, is Maximus IV Extreme worth the $400 premium over the P8P67 deluxe?
From what I've read around the place recently, the P67 is the 'in' thing at the moment, being an advance on the X58.
Another thing you could do, is go and visit the guy/person you take your computer to when it gets sad on you.
Hopefully you have a 'local' computer shop that you can walk into and talk with somebody about computers.
Most of those places will hand build you a computer to whatever specs you want, as long as the dollars are available.
A lot of them even have a number of 'pre-made' computers, that they are willing to put together for you and they will range from super el-cheapo jobs right up to pretty powerful ones.
The wait time on those *should* be less than a week.
The one thing you shouldn't do however, is go in and say "I have X amount of money to spend on a computer" or maybe you should.
You could very possibly walk out of the shop with a much better computer than you thought you would get for your money.
Anyways, it looks like you are getting lots of advice. Now all you have to do is decide which is good advice and which is bad.
Edit: had a thought while I was writing the last line, my 'local computer shop' has quite a good website, this -->
Gaming Computers is a link to their site.
Check out the 'Infinite' package. Just over $4000 Australian.
I'm not saying this is the build you want, but I saw the price tag on and thought..."that's close to what he wants to spend".
You should be able to get your hands on 99% of that gear where you are Tomoya-kun, what that lot is worth in your money I have no idea.