Simviation Forums

Hi all, just got my new pc  :) so i thought i would buy a copy of fsx duluxe, the graphics are amazing and performance is very good with everything on very high. But i have seen these addon packs you can download, that change the clouds, water etc. from the sceenshots ive seen makes a big improvement or does it? what is the best one to get ?im downloading now, "ground environment x" (think thats just for america scenery ?) and "x graphics" http://www.hifisim.com/xgraphics.php, are these anygood ? compatible? and how would i install them, will it make the graphics much better? sorry bout all the questions sure some one can help thanks guys