EXS 24 Logic Sampler Users Group

Hi Guys
I have just done a new install of Logic Pro 7.2.3 on my Macbook Pro
and I don't want to keep the EXS Factory Samples Folder on my system 
drive,
I want to move it to my external drive.

What's the best way to do this?
I have seen/ heard of 2 different ways:
1. Using an alias
2. Using Symlink

As I am a fairly recent convert to the Mac thing, I don't know how to 
do either
of these, or if one is better than the other.
BTW, I'm wondering if I should do the same thing to my Ultrabeat 
Samples file.
Its not particularly big now, but anything that is sample based has the 
potential to grow pretty quickly.

Any help would be much appreciated.
Thanks,
Danny B.