Blah. Most of the takes in this thread are disappointing to read. Genuine answer, you don’t need a bimetal, but if you really want one, just get one that you like the look of or something. Strictly speaking, yoyos can be objective, but you seem relatively new. Just keep learning tricks.
The best bimetal is arguably the Dinosaur in the Wild, though nearly any bimetal from W1ld is guaranteed to be top-tier
The Outlier 6 is also, at the very least, good
The YYFr Netrunner is quality, has a low enough price, and is good.
Shutter Elite is slop; avoid it, it has fragility issues. Rims can be pried off with your bare hands.
Check my tier list for comprehensive breakdowns, reviews, and a general ranking of a bunch of yoyos. Might help you make a decision.