I am running a bassport with 300xs and 1.75 lower. I have run neither prop to top end. The 26 Promax has a pretty good hole shot. It has one of the smaller flare rings that Robbie put on and has Allison cut blades that Robbie did. It still over revs out of the hole like most Promax props but the flare ring helps some. Really quick prop. I’ve run it to mid 80’s but I don’t run much faster than that ever. Mid range is really good.
I would say the E.T. runs similar to above? With a couple of exceptions. Hole shot is similar to Promax. The E.T. has more stern lift it feels like. The hole boat feels lighter with this prop than any other I have run. Great mid range. Don’t know top end capabilities. My props and boat are more capable of higher top end numbers than I am...... LOL!!