Really close. These are both top 10 DT songs for me. They've grown really well over time. When I was first getting into DT, I would have said Trial of Tears was my favorite, but at some point in the five or so years, Lines in the Sand eclipsed it by just a touch. So my vote goes to Trial of Tears.
Album ranking:
1. Lines in the Sand
2. Trial of Tears
3. Hollow Years
4. New Millennium
5. Take Away My Pain
6. Hell's Kitchen
7. Peruvian Skies
8. Just Let Me Breathe
9. Burning My Soul
10. Anna Lee
11. You Not Me