Building a new PC, and need opinions on RAM MFG's :)

Greetings everyone!

I'm new here, have only posted a few things in the Alternative Modding section, and had some questions about a few different memory options I've come across. I want to keep my cost at about $150-$200 for this.

My original plan was to get Two of these Mushkin 256MB PC3200 sticks.

What I would really like to do is go for a 1GB Setup, but, well, prices add up :x

I also looked at a few different types of OCZ memory:
512MB OCZ Basic Series PC3200
512MB OCZ Performance PC3200

And Corsair:
512MB XMS PC3200

My questions are, basically:

1) What of these would be suitable for overclocking? (When I learn more about it)
2) Would PC4000 really be worth the extra speed over PC3200? (Using This Board and Processor combination) I still dont quite understand the correlation between the 200mhzx4 (800) FSB of the P4 and the Memory speed.
3) Am I better off with 2 256's or 2 512's? I've read and heard that beyond a certain point, the extra memory doesn't make much of a difference if it runs so much faster. And I'm used to the slow speeds of a PC100 SDRAM System where more memory was always better.

Thanks in advance!

1) The OCZ Performance and Corsair XMS would be fine for overclocking.
2) I would go with the PC4000 to jack the FSB higher at a 1:1 ratio.
3) 2x512 would be better if you multitask, render or play a lot of games. Otherwise, you'll be fine with 2x256MB.

~THT

I've read that its hard to get a 1:1 Ratio with a P4 though? Pardon my newbish-ness to the subject

alot depends on the memory make the mb and the cpu..

Well, I have the MB, Processor, and Memory that I've been looking at all there in my first post, so any suggestions are greatly appreciated

With PC4000, you shouldn't have any problems running 1:1 so long as you run the specified timings.

~THT