Wow I can't believe that you would call OCZ a budget brand. That is kinda a insult to the company, there pretty much for the o.c. people along with other companies. Like my ram is o.c. OCZ Performance series (I know that it isn't the best) But I got some reasonable timings that are fairly tight and stable, plus OCZ will allow you to over volt the ram to a stated voltage and still be under warranty. I like my ram, and when ever I make computers for other people I usually use OCZ because I can usually find it on sale. Yet if you want really good ram all that matters it the chips that the company uses, Some chips are better than others, and support better timings. Oh and about dual channel well that is good to have, but the ram has to be the same model and type. You don't necessary have to buy one of those kits, though there pretty cheap right now and for people who just want the memory and not worry if it is certified or not. This is a good because it is hard to mess up, some of the company will actually test to see if the ram will work under dual channel modes. Also you gotta remember that not all motherboards will support dual channel, mainly the old mobo's won't. Mine is a DFI Lanparty UT NF3 250G, this is for the old A64 754. All the A64 754 will not do the dual channel but the 939 will. So you have to know what type of mobo you have. I could help any here with computer parts like what you could upgrade and help with installation, but I will need to know information about your current setup.
Opps I forgot to mention something, This is for all the Vista users out there, you can also use your USB drive to boost the memory of you computer using the ready boost. Though you should know that this is nothing like adding real ram to the mobo, the data transfer speed of the USB port is way slower that the actual slot on the mobo even if you have USB 2.0.
Okay one last thing, There is also another new thing out there in the new computers and it is called SLI memory. This basically like memory that will o.c. by it's self, kinda expensive and I really don't think that it is really that worth it in the end. I could go to detail about SLI memory but I won't.