Dom, did you ever compare the performance parameters between the two types of tips? You could shed some light of the differences for the rest of us. I still have my Madras tips on, and think they do help with a few things such as greater angle of climb, useful for me in short grass fields. My stall speeds at full power read 0, no doubt the pitot angle affects this. The airspeed indicator does seem accurate or at least normal in all the speed ranges. Top speeds have been debated. Landing stall speeds I would think are a bit lower, but I don't know if it's enough to notice or matter.
I'll grant you the visibility to the side will be a big improvement. Your tips look very nice. Mine are white as is the rest of my wing making them look a little less pronounced.
