I actually got into APC relatively recently so I didn't have a lot of nostalgia for their first few albums. I pretty much listened to their entire discography for the first time around the same time period. These are my favorites from them.
Vanishing is a great song! Probably wouldn't be much further down my list. Honestly, Thirteenth Step took longer to grow on me than Mer de Noms and Eat The Elephant because it's a bit more subtle. But it grew on me HARD.