Umm... ok. Yeah, stick with Intel, even tho they are just NOW implementing support for DDR RAM. Of course, you could always stick with their recommended brand of RAM, Rambus, which typically costs about 100% more than equivalent DDR RAM.
AMD is the way to go. Now ATI, they're OK. They make great video cards that are typically much less expensive than equivalent Nvidia products. The only problem is that they may run buggy due to driver problems.
www.tomshardware.com