One or multiple loaders (what is best practice)

Hi

I am making a web page and i have to load in to main page swf multiple swfs that represent background. First there is a gradient swf than swf with snow particle system. My question is what would be best practice to use one loader for all different swfs that are in the background or should i use different loaders for different swfs?

Here is what i mean:

1.) var loader:Loader = new Loader();

I use this loader to load first gradient swf and after it it has completed loading i use same loader to load snow swf.

2.) var loader:Loader = new Loader(); + loader = new Loader();

I use this loader to load first gradient swf and after it it has completed loading i set it again to be loader = new Loader();
and than i use this loader to load snow swf.

3.) var bgLoaderGradient:Loader = new Loader(); + bgLoaderSnow:Loader = new Loader();

I use it to load gradient swf and than i make new loader,
bgLoaderSnow:Loader = new Loader();
to load snow swf.

So what would be best way to do loading of the swfs. And if there is any even better way to do it that i have not listed please share it with me.

tnx

Luka