Which is better for a dragon deck Blue Eye White Dragon or Red Eyes Black Dragons and why?
Well it all depends on what you feel is best. Blue Eyes White
Dragon is good for beat-down and simultaneous fusion summons of
both F.G.D. and Blue Eyes Ultimate dragon, pretty much beat-down
itself. Red Eyes Black Dragons are more complicated, because it
depends on which Red Eye compilations you are using or generally
like.
A different approach from this is Blue Eyes White Dragon is a
better card if you want to compare it to the normal Red Eyes Black
Dragon. Blue Eyes White Dragon is searchable with White Stone of
Legend. Combined this with Card of Consance which discards a dragon
tuner, (the White Stone of Legend), you get to draw 2 cards. And
now with Trade-in (Level 8), you can discard that Blue Eyes White
Dragon for another 2 cards. The normal Red Eyes Black Dragon is not
worth playing anymore. If you want to have a good dragon deck with
a good drawing engine, use Blue Eyes White Dragon, and The White
Stone of Legend.