Forgive me if this is a rather elementary question, if you have Real Environment Extreme, Ultimate Terrain X and Ground Environment Extreme, what relation do they have to FS Global 2010? I guess what I'm asking is, do these programs work in concert or does one (or more) of them do the same thing, meaning all I would essentially be doing is overwriting one add-on scenery set for another? I have REX, UTX and GEX installed and FS Global 2010 looks cool, but I'm just wondering if there would be any point to me installing it.
Thanks!