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.
Drivers: Starlite Wraith (158g), Gummy Champion Leopard (150g), 1st Run Z-Talon (150g)
Mid-Range: Star Classic Roc (146g), R-Pro Roc (157g)
Putt/Approach: Legacy Protege Clozer (158g), Glow DX Aviar (150g)