I just rebuilt an old Tecware Phantom with Akko Lavenders and they are amazing for the price. I also have a second Phantom rebuilt with Akko Yellow Creams and they sound phenomenal. However, I hate the typing experience on them. They feel fine, but my accuracy is terrible on linear switches. The Lavenders are a lot more clack than thock, but I am much more accurate on them.

On a side note, take that old Logitech with the Cherry Blues and do a quick mod on it. I have an old Cooler Master with MX Blues. I syringe lubed the switches with Superlube, tape moded the back of the board, lubed the stabilizers, and popped some thicker PBT caps on it. The change is massive. It sounds and feels better than a similar board I have with MX brown switches in it. I intend to do the same mods to that board and see what I end up with.

I also intend to try on the Gazzew switches at some point. I think I'll prefer the U4T though as the U4s are silent, and lack any real thock, which is something I prefer. Finding them in stock is always the problem.