We use DL almost every day and we love it, but we know it has its limitations. In particular once you have over 1000 items it gets slow, especially when the data file itself is on a network server (even over gigabit.)
Version 2 is supposed to have a revamped database capable of real network access instead of the symbolic link kludge we thought of in v1.0.5 and had confirmed by the author as the the solution he would use. We cannot wait.

Amazon has been fiddling with the fields again, and they are using drunken monkeys to type the data so there's really no way DL could be expected to sort out what is supposed to go in which field when the data entry goon at Amazon don't appear to care.