SD Cards

Just going through my wallet of little SD cards as you do when there is sod or else to do, I got to wondering what the variations were and why bother these days with 4GB. My main cards now are Lexar 16GB high speed but I see some are higher speeds for video etc.
So what do we do with the smaller cards which have very slow write speeds, they still work, but cameras spec's these days are far higher and process info much quicker.
Just wondering as it's not a topic that crops up in the club, what others use.
and if your not sure what the hell I'm on about put all your cards out on the table and have look at the numbers.
So what do we do with the smaller cards which have very slow write speeds, they still work, but cameras spec's these days are far higher and process info much quicker.
Just wondering as it's not a topic that crops up in the club, what others use.
and if your not sure what the hell I'm on about put all your cards out on the table and have look at the numbers.