Generally, floro is larger diameter than mono. That's why it gauges differently. Also, Vanish has a bad rep amongst the bass fishing crowd, but I've never had any major issues with it. Note: If you use the Trilene knot or Improved Clinch, use 5 wraps instead of 4. The knot will hold MUCH better.
"They say you forget your troubles on a trout stream, but that's not quite it. What happens is that you begin to see where your troubles fit into the grand scheme of things, and suddenly they're just not such a big deal anymore." - John Gierach