After days and days of mulling it over, I went with "Lines In The Sand", but just by a very little amount. "Trial Of Tears" is an epic masterpiece, but there's something more DT-esque about LITS, their heavy and jammy side that I enjoy so much. It's got a lot of riffs and grooves in it that are very indicative of a great DT song.
The live versions have all been pretty good, too, especially when they do the '96 version with the added lyrics and instrumental sections. It just takes the song to a whole other level that I enjoy very much. I would love to hear them bring it back to the live stage at some point soon, if only to hear Mangini tackle that song!
-Marc.