Advice regarding RAM upgrade for Snow Leopard

Hello Everyone,
I have a 2.4ghz White MacBook (purchased April 2008), with 160GB HD and 2GB RAM (can be upgraded to 4GB RAM as stated in the documentation/specs that came with the computer).
I have installed Snow Leopard and all seems to be running smoothly at this point.
Since Apple has laid the foundation for 64 bit processing with the release of Snow Leopard, looking forward, should I look into upgrading the RAM on my MacBook to 4GB to accomodate future applications that will be written in 64bit? The graphics chip on my computer is an Intel GMA 3100.
Would doing this offer me any benefit? Or should I leave well enough alone?
My goal is to keep this computer for as long as possible, in an updated usable state, and so far I like the Snow Leopard OS.
Which memory cards (or sticks) are the best quality, and are compatible with the MacBook?
Any sound advice would be very much appreciated.
Thanks for reading,
joe

Whatever Apple sells OEM is pretty good stuff. I've never heard of kernel panics or incompatibility problems (duh!). It's usually a "fully branded" module from one of the major DRAM manufacturers like Hynix, Samsung, Elpida, or Micron.
I would note that there was nothing on my factory installed Hynix modules that identified that it was sold or installed by Apple.
One very good alternative (with the Intel chipset models such as yours) is Crucial. I've got a set in my MacBook (late 2007) and it's performed flawlessly. I knew what I was getting and purchased the 4 GB kit from Newegg, but some people insist on purchasing directly from Crucial.com with their compatibility guarantee. I'm sure they pretty much sell the same item. Crucial.com doesn't sell Apple specific laptop memory, but they do cross check it for compatibility.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148201

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Advice regarding RAM upgrade for Snow Leopard

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