It's hard to go wrong with the Eheim Classic series.
This x1000. I've had some 2211s running nonstop on small tanks since 2009. The ones I've purchased in the past 2 years are just as great as the older ones. They're not as hyped on Instagram accounts of inexperienced "influencers" but they're tried and true. Time tested, to say the least. Spare parts are readily available and cheap for what they are. 2211/Classic 150 seems to hover around the $80 point in the US market.
Eheims come with everything you need to control flow - no need for additional parts.
Also can't forget the smaller Zoo Med canisters. They're $35-$40ish these days and even though they're cheap, they're reliable. The Oase FiltoSmart 60 is that filter just twice the price. Other Oase filters are great if you want integrated heating, though.
UNS, in my experience, aren't worth half what they cost. Not when compared to everything else available on the market. Poor design, cheap material, weird, unrestricted flow inside the filters themselves. I'd rather buy a $30 SunSun from fleabay (another good-ish option, honestly.)