Naganadel or Regidrago in Pokémon SwSh?

So I am playing Shield casually, and I completed the story mode and DLC story modes. Now I just want to perfect my team. And I dunno if I should put Naganadel, or Regidrago. I am playing casually, but sense I am finished, I am IV breeding and EV training a nature grinding. And I want a Dragon Type in my team. So I am left with those two. I kinda came across the same dilemma with Salamence and Altaria in Pokémon Emerald. Now, I already have a Roserade on my team, so Naganadel would cause a little type overlap. But if it is worth it, the I don’t mind. Let me tell you my team. Keep in mind this is not competitive, so the Pokémon on my team don’t matter. I am just doing the IVs and EVs for fun cuz I am bored. Also if there are any better Dragon Pokémon then the Regidrago and Naganadel without type overlaps, tell me. I am all ears.My team:

Roserade

Cinderace

Azumarill

Zoroark

Lycanroc

And the Dragon type. Which should I pick?

or?

Pleaselog inorregisterto add a comment.

Naganadel- Wonderful Speed and Special Attack- Excellent Ability in Beast Boost- Gets moves like Nasty Plot, Dragon Pulse, and Sludge Wave- Only average in the rest of its stats- Four weaknesses

Regidrago- Ridiculously high HP- Very solid attacking stats- Fewer weaknesses than Naganadel- Gets moves like Crunch, Fire Fang, and Dragon Energy- Good Ability in Dragon’s Maw- Lackluster Speed and garbage defenses

Go with Naganadel. It’s very potent with Nasty Plot and Beast Boost, and can accomplish far more than Regidrago in most circumstances.

Naganadel @ Life OrbAbility: Beast BoostEVs: 252 Spe / 252 SpA / 4 HPTimid Nature- Nasty Plot- Draco Meteor / Dragon Pulse- Sludge Wave- Flamethrower

Hope I helped!