I have never owned or used a Sabertooth speedo, but I haven't heard 100% positive things about them over the years.

We recently received and tested the Botbitz ESCheap85s and so far the suggestion is that they're very good. Control-wise, as others have said, they aren't brilliant really down low (first 10% of throttle) but in the mid and upper range they're perfect, at least for our 4WD machine. Next to the Electronize we were running before, they're a dream.

We'll be testing them in anger soon hopefully, so if you haven't made a decision by then I'll report anything here.