What are the dimensions of your tank?
Actually, hang on filter(HOB) is good enough if your tank length is 3 feet or less.
For hang on filter, you can consider two Seachem Tidal 35 or one Seachem Tidal 55.
Usually I prefer two filters for backup purpose and I can clean each one on separate weeks to prevent losing too much beneficial bacteria at one time.
www.seachem.com
If you prefer external Canister filter, you can consider Eheim Classic 250 (if you have fish that prefer slower flow of water) or Eheim Classic 350(if you have fish that prefer faster flow of water).
Eheim Classic are cheaper than other Eheim models.
But if you prefer a better quality filter from Eheim, you can consider Eheim Experience 150.
It depends on your budget.
With EHEIM eXperience you have the fundamental benefits of our top external filter generation. With its predecessor, the…
eheim.com
With EHEIM classic you have everything that makes up a good external filter. By choosing a classic you won’t go wrong. Because you have…
eheim.com
eheim.com
Fluval is also a good brand.
You can consider Fluval 207.
As the world’s best-selling performance canister filter, the 7th generation 07 series features Fluval’s eTEC (Efficient Technology) state-of-the-art materials and design refinements which make them ultra-quiet, powerful, energy efficient and user friendly for aquariums 10 to 100 US Gal. (40-500 L).
fluvalaquatics.com
For easy cleaning/maintenence, you can also consider Oase external filter.
Integrated heater – Provides precise and uniform temperature levels and reduces the amount of equipment seen inside the aquarium by housing the heater in the unit Compact filter with large filter surface – Models 200-300 offer 3-stage filtration: biological, mechanical, and chemical filtration...
store.oase-usa.com
But the filter case material/design seemed to be average only.
There are too many brands for you to choose.