i picked auto EQ and other, the other being room treatment, which i think is the single most important factor in beating the boom.
placement of the sub definitely makes a big difference, but i've heard some pretty amazing things accomplished with EQ and digital room correction.
plus, even though i didn't vote for it, the smoothest, most articulate, well-balanced bass (for music)... in my experience... comes from full-sized floorstanders with no sub at all. but of course, no room for that in my place (or wallet).