Tiger VS Leopard

Here is my question i just bought a used mac off of craigslist two days ago and i just got done upgrading it as much as i could
the specs are as followed
G4 1.33 GHz
1.5 GB Ram
80 GB HDD

now the question is is to which OS X should I load

Tiger or Leopard
I will mainly be using it for web surfing word processing possibly some light gaming "starcraft brood war"

also this is my first mac

any suggestions would be greatly appreciated

Mac OS X v10.5 Leopard requires:

A Mac computer with an Intel, PowerPC G5, or Power PC G4 (867 MHz or faster) processor
512 MB memory or more
A DVD drive for installation
9 GB of available disk space or more

What OS is currently loaded on it?

- If it already has Tiger on it...are you willing to spend $100+ to purchase 10.5 Leopard.
- Your decision may also depend on what programs you're interested in using. Some programs or versions of programs may require OS 10.5.
- OS 10.5 has some features 10.4 "Tiger" doesn't have...such as the backup program "Time Machine".

- Nick

I actually own both os's and currently i dont have any os on it, i have always been a pc guy up to now so i have collected many operating systems and programs over the years

If your Leopard disc is he black full retail install DVD, format the drive and whack that on it.