Today levels are pretty accurate at a low price point due to CNC and automation. Just check a level against a couple of others of known quality and buy what you need.
I won't say I'm a level junkie but I have a 4' Stablila, and old 1' Stanley cast steel unit and one of the first Check Point laser models to come out on the market which I paid over $100 30 years ago. Nothing but trouble with the laser and I gave up on the thing. It's now a 10 dollar level AFAIC.
I also have a couple of wood mason's levels, another old cast AL level by a well known that I can't think of unless I go find it. And I have an 8 footer of questionable quality that serves mostly as a straight edge but it's seen its share of door jambs. Along with a tape, I have gotten by. When I really needed dead nuts, I'd put a better level up to the marginal one and read that.
Lastly, I have a 2' and 3' cheap extruded I level one of which has been modified to adjust wheel camber. Works fine for that. The other one, well, not even sure where it came from, probably a grab box sale at a garage sale. It's light and fine for hanging pictures or using when I set up 3 in different directions to level out a table or washer. the 4 footer just gets in the way a lot of the time but it's the one I check the others against.