I like having two heaters on an Inkbird temperature controller, for redundancy and reliability. Eheim heaters are very durable and good quality. They are a pita to calibrate, but if you get an inkbird controller, then the Eheim won’t have to be calibrated, just as long as they heat past the set point on the Inkbird.
That’s what I have on my 75 gallons. I use 2 x 200 watts but you’d be fine with 2 x 150w.