Braided worked better than wire to get to bottom while trolling. I wouldn't have beleived it until my cousin brought his rod w/ braided on a trip earlier this year and he was staying deeper than I was w/ wire line and didn't need to let out as much as I did (we were using the same weights and type of rig...just different colors)... That's when I ditched the wire line.

Plus the braided line is thinner so you can get more on a spool. (and that's also why it trolls deeper/easier than wire)