S.T.A.L.K.E.R. Shadow of Chernobyl Mods?

I just got STALKER Shadow of Chernobyl and was jsut wondering if I should install mods or not. This will be the first time I have played any STALKER game, so wasn't sure if I should play through normally. Also if I should install mods what one's should I get? So far i have been looking at this one (http://www.moddb.com/mods/stalker-complete-2009) Is there any others worth installing for better graphics or gameplay?

I would say just stick to the complete mod, especially for playing it the first time.