I'm with slayer and Klurejr, if I'm close to 50 or over its in 5th gear and stays there. Back roads, freeway it doesn't matter. Never felt the need to down shift unless slowed by traffic, needing to make a quick pass, or something of the like. But I ride in what I consider a relaxed non-aggressive style. I know the engine is designed to turn the high RPM's but I couldn't imagine running 60 in 4th gear for any length of time. To me that would just be annoying from the vibration and noise.
2006 V-Star 1100 Classic
Silverado windshield and passing lamps
OE Highway bar with custom mounting brackets
Kuryakyn Dually ISO Highways pegs
Barons Nasty Boy Slip-ons
Kuryakyn led headlight halo