I have a different experience and I do see much more spread with the new diffusers as well as increased blending. If you want to save a few bucks; I have an alternative solution. Make your own diffusers.
Often, I see broken LCD TVs that neighbors are throwing out. After taking them home, and testing them to ensure they’re broken; I’ve dismantled the screen because 1 of the layers has the same physical characteristics as the EcoTech ones. Now the DIY ones are lacking the white reflective panel that helps with increased spread, and I haven’t tested the spread on my DIY ones, only the EcoTech. But the DIY ones will give you some free blending.
But I agree that there’s no substitute for more pucks or T5!