The venerable F1 has lost some respect due to the hype of new beacons clamoring for attention. I have used mine for many years - it has proven to be reliable, durable and easy on batteries. Most importantly, my practice rescues are faster than most other people's. One reason is that I DO practice, the other is that, as taught in a beacon class, I trust my beacon. Even though it doesn't point me directly to the victim, it arcs me in quickly and accurately.