I have one of the Eheim Jagers and it's worked great. When ktownhero says they're very long he's not exaggerating. I have a 150 watt and it barely fits horizontally in the big compartment in my 20 long sump.
I have also used the Aqueon Pros and liked them a lot. Main thing I liked about them is that they weren't glass, so it made me think they were harder to break (never tested that theory luckily).
Somewhat of a tangent question that will hopefully help the OP: If, say, you happen to be fiscally minded (AKA cheap) and happen to have 2 different heaters laying around, can that Inkbird be used with 2 different wattage heaters?