Macbook Pro 6GB RAM benefit?


To max out my "Santa Rosa" 2.4 GHz 17" Macbook Pro I can get a 6GB "unmatched" set of RAM (2GB + 4GB) that supposedly runs well and gives the most RAM for this machine. Is anyone running this configuration of RAM and have there been any problems? Or, is 4GB matched a better configuration?
I have a similar setup with my 2.2 15". I have the unmatched 6GB of RAM from Otherworld Computing. I was having freezes initially, but it turned out to be a bad 2GB chip. While waiting for the exchange, I was running 5GB with no problem. Since I got the replacement chip, I've been running 6GB without issue. I definitely recommend it. I was able to set the EXS RAM optimization to favor 3rd party Audio Units, something I had wanted very much to do (which requires 5GB minimum).
I just upgraded my macbook pro,new imac and old imac all to 4gb ram for $130.The OS has to use RAM, too.I'm not sure how much the OS needs, but I'm guessing the 2 extra GBs will help.If your doing lots of heavy multitasking 6GB can be worth it.But 4GB is plenty for most people.
Not a big deal if you are already using 64 bit Logic; but in 32 bit mod having 5GB or more gives you an option in the EXS24 settings to optimize RAM management in Logic to favor 3rd party plugins instead of EXS24 instruments (which I seldom use these days).