Mine are the TU2, HM2 and PW2, the hm2 is my favourite rock n roll distortion, even though its not made for that, and I use the pw2 as little bit of a dirty boost on the neck pickup of my telecaster all the time.
I'd say my OD-3 and LM-2 would be the most heavily relied on in my pedalboard. That OD-3 is great for boosting aswell as being a smooth lovely overdrive the odd time!