last year i ran a 90hp Optimax tiller with no power steering, and now i’ve got a 150hp Yamaha tiller with Merten’s on a WX2000T.
at low speeds i can turn the power steering almost as fast as the old motor when the tension knob was loose. (not quite as fast, but almost.)
at high speeds the power steering is waaaaaay easier to turn than the old motor with tight tension and i feel much safer / in control of the boat: if my hand slips off the handle i know it’s not going anywhere.
on long runs the lack of feedback/torque means it doesn’t wear your arm out.
i also didn’t like fiddling with the tension knob constantly.
i strongly recommend the power steering, even on the smaller motors. the added cost will be well worth it.