I found the Donnay Pro One 18x20 to be the "best" of all the sticks mentioned so far. That said, I'm currently still a BLX Blade 98 user - also a great stick. The Donnay is just a bit softer, so may be switching soon.
Also, FWIW, I used Head Radicals for a long time. I owned all of them, but liked the MG and the LM the most. I like the Blade and the Donnay much better though; more power and spin, larger sweetspots, same control.