Am getting to like some other new powders as well, especially Alliant's Reloder 26, but they haven't become go-to powders yet.
I am finding RL26 much more versatile than I ever thought it would be.
Used to do most of my rifle reloading with R22, R15 & H870. Now it looks like R26 can fill most of the same range of loads and cartridges. Not sure about it replacing R15 for the 375 H&H but getting ready to give it a try. If I can keep it under four types that's good and three is better. Just need to settle on loads for the small bores 17 & 22.