First, thank you all for your comments - both public and private.
Some are saying with only 2 gigs of ram, you will notice no real difference, so stick with 32.
Some are saying, 64 is better and about much more than just what you get from having more ram, so go with 64.
Some of the latter people seem to be 'crusading' for the use of 64 - although not many of them have only 2 gigs of ram.
I don't want to use 32 if 64 will work better, even with only 2 gigs of ram.
And I don't want to use 64 just because '64 is the wave of the future', if there will be a performance hit or some other kind of a problem because of using only 2 gigs of ram.
So now I am a bit confused :-(
I hope I have made sense here....
I know that this is not a very important question overall, but I just want to install the right one on the partition I have set up for it.