You might also want to check out Nitro Select TLS boots. They are pretty stiff (and include a tongue stiffener), even though they have an articulated ankle. They are also a reduced footprint boot with a fused liner Nitro gear also has a two-year warranty. I have narrow ankles and a wider forefoot and my Nitros are a bit tight around my forefoot. They also have pretty decent cushioning and the TLS speed lace works well. Though I'm not a fan of the liner lacing system.
I don't have any idea how the other models fit.