Matchbox vs HMVC

[eluser]devbro[/eluser]
I decided to experiment with module design in my current project. but i dunno which one is better?
matchbox: http://code.google.com/p/matchbox/
HMVC: http://codeigniter.com/wiki/Modular_Extensions_-_HMVC/

which one did you use? which one do you prefer?