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The basic $99 crayford from bintel or andrews are a very good upgrade from a R&P, but still quite stiff, especially with heavier eyepieces. If you want to be sure collimation stays spot on, again, you've got to keep a fair bit of tension on it with any eyepiece and it ends up quite stiff. (There is no image shift but quite a bit of sag without the tension up.) There is some backlash in the pinion shaft but not in the focuser barrel itself. You do get what you pay for, but in this case for $99, perhaps a bit more even. I haven't tried to pull it apart and try to improve on it. Maybe one day.
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