Probably the fireclaw. It has serious armor and few weak points. It’s melee attacks are devistating

Probably the ravager. Looks like a kitten sometimes and has a sniper cannon.

Specter Prime or Apex Slaughterspine

Specter prime was deadset on having you as her companion so I doubt you'd have too much trouble there

Honest response: The Stormbird. It wont destroy my home by just moving, It wont have any spacing problems since it can simply fly high. And If I can ride it,it will have very high utility while still being a formidable fighter

Slaughterspine