direct graphics or object graphics ?

Hi people,

I'm a student programming a software for analysis and visualisation of
some kinds of data. In my interface I want to show some plots.
I have an object for do OPLOTs using object graphics but I dont know
if is better to use object graphics when I'll try to plot more than
1000 plots.

I think programming in object graphics is better than direct graphics
but Im not sure.

Any opinions ????

Thanks,

Bernat