Which moveset should I swap my 2nd DB/DC Dragonite in?

1 or 3 depending on you

if you want him to be even faster attacker go with hurricane if you want a high pump in damage get outrage

i like more dragon breath than dragon tail, that is why i dismiss the 2

If you're set on one of those combinations, DB/Hu makes sense to me because both moves have short cooldowns compared to dragonites other current options. DB/O seems counter intuitive because DB is great for dodging but outrage is not. DT/DC seems like a solid option; I would rather go DB/DC in that case though

If it were me though I would leave both of your current movsets as is; DB+DC is sweet, it will flourish in PvP if when PvP is released dodging is important and I'm sure it will have trading value

I'd say keep dragon claw by any means

Keep dragon claw, not even a hard question to me. You're crazy to want to change it imo.

Please don't touch any of them... I'd kill to have a DB/DC one. Just evolve another one and TM him if needed but you've got two perfect generalist attackers IMO.

4. Keep Dragon Breath/Dragon Claw. Good IVs with the most desired legacy moveset.

Just swap him with me.

I say keep DB/DC as it is. No doubt a DB/OR will performed better in terms of dps, the dodgeability & nimbleness of DB/DC can't be underestimated, especially if PVP ever comes out.

Btw, here's a comparison with DB/DC vs DB/OR ( https://youtu.be/AO7F-C_1g0Q ). My DB/OR was TMed from a DB/HB, so it was a very easy decision.