Well...here's my story....I bought a JBJ Reaction Stage 4 canister filter with a built-in UV. It's basically the same design as the SunSun (which I believe is now AquaTop). Not a very well known brand (not that I know of) and it's been working fine for many years. I had to replace a couple of parts a couple of years ago, but that was after a couple of years running. I also have had experience with an Eheim Ecco 2236 and many of their Jager Heaters. All I can say is Eheim is one of the worst I've had even though there are countless of members that swear by their products. I've had 3 heaters that have all over heated and I've replaced the Impeller on my Ecco 3 times compared to any of my other canister filters (3 Fluvals, 1 JBJ, and 1 xP3) which I might've replaced on one of the Fluvals once and the xP3 once.
So as far as I'm concern, Eheim is not worth their price tag and other products that are out there are better.
So as far as I'm concern, Eheim is not worth their price tag and other products that are out there are better.