I recently bought a laptop with Vista on it, and obviously Vista being the hog it is, I want to buy some more RAM (currently came with 1GB).

I just want to get some input before I went out buying some...

First, is there a specific difference in specified "dual channel" ram? Or would I be just as good off buying 2 separate 1GB sticks? I've looking at buying one of the following combinations...

2 of these---
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134129

2 of these---
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145012
(depending on what people feel the quality of 'value select' RAM, as I've heard it doesn't last as long, any input here?)

Or just this---
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134554
(this is where I wanted to know about the 'dual channel' and if it's specifically different)

Or this---
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148086

Any input on which would be best would be great, thanks!

"Dual-channel architecture is a technology embraced by motherboard manufacturers and does not apply to memory modules. In other words, any matched pair of memory modules may support single- and dual-channel operation, provided the motherboard supports this architecture." Read the rest HERE.  The term dual-channel RAM really has no meaning since you can buy individual sticks and have them engage dual-channel in your motherboard. I have successfully mixed memory of different speeds from different manufacturers and everything works just fine. It is always desirable to purchase two sticks of identical RAM, and a kit that is labeled as dual-channel RAM should contain identical sticks.

 Alright, that makes sense. I appreciate the help.