But I am a bit confused on which type to purchase.. I've really never seen or been given these choices before for a Software only product...

So with Waves GTR3, I have 2 different options to chose from: TDM or NATIVE.....

You can see my PC Specs and everything down in my signature below.. Based on that.. Which one would I pic, and what's the difference?

Thanks!!!!

Nevermind.. Got it... TDM is for Pro Tools HD....... 

Make sure you download the demo and try it out first.  Waves gives you a 7 day period to test drive their products.  I know that having that seven day trial has helped me decide both to purchase some of their products and not to purchase other of their products.

You can pick up the "light" version of GTR 3.5, called GTR Solo, at Musicians Friend
for $18.  

http://www.musiciansfriend.com/pro-audio/waves-gtr-solo--native

I got GTR 3.5 with my Gold bundle...as with any "amp" sim some things are better then
others, and other things are not so good.  But that's why it pays to have a more then
one Sim.  

I like GTR 3.5.... especially their "clean" sounds...

I also have GR 4,5, Amplitube 3.8, TH2 Producer, AcmeBar, and a few others...

Being a guitarist, you can't have too many options...because they all do something better
then the other does...