Most any burner can write TY G03 at 12x or 16x with excellent results. You certainly don't need to waste money on a Plextor just for burning TY media.
As for "compatability", that depends on your players, not the media or burner. But you should not see any difference between TY G02 and G03. It is true, however, that your 12x burner may or may not have proper firmware support for G03.