Which katara is better?

I am poor right now, so I can't get any SweetWater.
After research on the katara, I found these 2 are affordable, but which one is better? I'm not planning to perfect their potential stats.

1)Dragonic Dragon Katara
ATK 58, Effects: HP +50, MP +20, ACC +30, 8 Slots, Faster (3) Speed
-It has 20% Minimum Critical damage
-additional 20% to Devil/Demon boss(I also found that most big boss are Devil/Demon type)
-30WA 10Stats(?) for 10 slots

2)Raven Horn Shadow Katara
ATK 65, Effects: LUK +10, 7 Slots, Faster (3) Speed
-45WA 18Luk for 9 slots (spell trace'd)

Differences are:
- RH has extra 22 WA
- RH has extra 8 Luk
- Dragon has extra 40% damage

Lastly, I'd like to know the Katara ranking as in scroll'd + in-bulit stats

Raven Horn cause you can transpose it.

It's actually 30% extra dmg assuming 100% crit when fighting devil/demon monsters

Sengoku kataras are dirt cheap if you can snag one from someone unaware of transposing making it the best katara for that purpose