October.
Not because I think it's their best work, but because it was the first album (actually, cassette) I bought of theirs way back when. Great memories of that time period! My brother and I split the cost of the tape and made a schedule of who got the tape on what days of the week. Eventually, my Dad purchased a dual tape playing boom box (remember those?) and we were able to copy the tape so we each had one. Still have it in the original case. Pretty hilarious.