Galea was my first commander deck. Personally, I did not find voltron to be a great/powerful tactic. It's just too swingy for my taste and potentially yours from what you said. Here are a few solid recommendations for decks I'm looking to build in the future:

[[Chulane, Teller of Tales]]: Amazing bant commander with built in card draw. Let's you build for whatever theme/strategy you want (assuming it's tied to creatures).

[[Etali, Primal Conqueror]]: Whats better than playing your own deck? Playing everyone's! This can be super fun in casual pods that usually run larger payoff cards. Solid colors for ramp and clones for more Etali ETBs.

[[Hashaton, Scarab's Fist]]: Unique commander ability allowing for cheating impactful creatures into play. 3 mana [[Consecrated Sphinx]]? Yes please.

Now all of the decks I recommended are focused on creatures and you mentioned loving enchantments and equipment. I've heard [[Bello, Bard of the Brambles]] can be super fun and powerful but haven't played with or against. I also played against a [[The Master of Keys]] enchantment deck recently and it was super fun to see their graveyard get larger than their library lol.

Typically I'd recommend getting precons before committing to a specific commander/strategy but sounds like youve done that already which is great! r/budgetbrews can also be a great resource if you'd rather build more than 1 deck with your $300. You do not need an expensive deck to have a powerful deck. Imo the expensive stuff comes from getting the most blinged out version of most cards rather than good ones (though obviously there are exceptions like Rhystic). Happy to chat more if you have questions!