The best HOB is the Seachem Tidal in my opinion. Great flow, good design, easy to clean and have a built in surface skimmer.
It's a good HOB filter for sure, and there is a lot to like, but I'm not a fan, mainly because I don't agree with this bit:
easy to clean
I've found it a PITA largely because its a vertical bottom to top design, so the pre-filter sponge is on the very bottom. So to keep the prefilter sponge clean you have to remove everything, the internal basket and all your filter media, to get to the bottom prefilter sponge.
I much prefer a horizontal filter design, where you can just remove a single vertical piece of sponge, clean it and slot it back in in a fraction of the time without even having to turn the filter off. I have this on my cheapo APS HOB and its much easier to live with.:
The new Oase units have this arrangement too, plus there may well be enough room to sneak a small heater in the rear (unconfirmed):