Hmm ... I see the Dragon Knight Saga wins over DA ? and this "thread" is (all) about "DKS Sale's Thread lol" ...
... my only conclusion is now, if you still doubt which rpg to buy ?
Buy it right now
And you will know
All the fun is on your side
To play as a Dragon Knight! 
PS : I think each rpg has his ups & downs and like Divine Avenger said : lucky all people aren't the SAME, that will be indeed very BORING
....
