Pretty good game. The metroidvania structure really doesn't work, and it's compounded by that wack ass map. Otherwise, the game is pretty fun, and I love the OST. Biometal transformations are a cool concept, but you'll likely just end up using model ZX and model H (and model L in the water) all the time. As usual, Inti-creates' bosses continued their steady increase in quality, and at this point, you have some of the best bosses in the Mega Man franchise (though that's not a very high bar when it comes to classic MM and MMX). Story isn't as cool as it was in the Zero series, though.

Oh, and Model Ox is the coolest armor/upgrade in the entire franchise. Bar fucking none.