My wife and I often spot for each other, especially on blind holes, or on courses in the countryside. Its worth spending the extra 30 or so seconds or a minute or two sometimes, and you also get the confidence that somebody has their eye on it and you aren't as afraid to crank on it to try and make that money shot work. Of course, we also use bright discs, when possible.
Distance Drivers: Barsby Boatman, Glow Champion Katana
Fairway Drivers: Pinnacle Rival, Icon Patriot, Protege Rival, Elite-X Cyclone
Mid-Range: Ghost/Wasp, Z Buzzz/DGA Squall, Z Glide
Putt/Approach: Star Classic Roc, Icon Clutch, Protege Clutch