I took a look around and a lot of comments mentioned to get one that uses ‘LiFePO4 Batteries’, and that seemed like a reasonable requirement.

They’re supposed to have a longer life span, be safer, light weight, and better charge/discharge efficiency which is in line with what I’d be looking for.

Some brands/models that I saw recommended:

• BLUETTI came up in more recent posts
• Ecoflow (specifically the RIVER 2) came up a lot
• Anker was suggested a few times, but the comments weren’t that detailed

edit, added an image of what I’m referring to