I liked Mega Man ZX. ZX Advent was awful, though.
ZX is alright, but has a couple really debilitating flaws, particularly the map system, bland level design, and useless human form. But the main problem is definitely ZXA.
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http://www.youtube.com/watch?v=SBpfwpOPXNc&NR=1&feature=fvwp
~Pinkie Pie is the best pony~