#1 Item ever purchased...
Would have to say #1 is my Gerbings electric jacket. It allows riding in nearly any temperature. By far has increased the comfort level in cool to cold weather ridng.
#2 custom seat, really adds to the distance - comfort ratio. Longer rides less pain than stock seat.
#3 item, XM satillite radio. Takes the boredom out of long slab rides, allows me to stay on top of news and current events while on the road and with almost 200 channels, absolute variety of music.
"It's not the years, it's the mileage"