Hard question, since they're one of my favorite bands, but Lonesome Crowded West beats M&A in a close one. For the record I think Building Nothing Out Of Something, while a 7-inch comp, is among their best stuff.
I never truly got the Pixies comparison, to be honest with you. Sure, Sad Sappy Sucker kinda has the influences, and on the first few albums Isaac's voice does sound like Black Francis, but musically they're a lot different. Completely different guitar and bass parts, dynamics, arrangements, melodies, etc. I mean, yeah, they were definitely influenced by the Pixies, and some songs you can certainly say "Yeah, they were definitely listening to the Pixies when writing that song" but to the people who call them Pixies Jr..... I just don't see it. Way too many differences for it to be "exact" (Same with the the critics who say Nirvana are nothing but a Pixies ripoff band, just too many glaring differences).
I think MM has more depth to their music, but that's just my opinion.
~Jeremy~
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