Merrill - I've had the Lysette-styled seat now for about a year and a half, and have put about 9,000 miles on it. If I take a break every hour and a half, or so, I can pretty much ride most of the day, which at an average of about 35-40 miles an hour translates to about 200 miles, or so. Wearing bicycling shorts definitely helps. However, I have gone though A LOT of seat springs, and I only weigh 175, and always ride on nice, smooth, paved roads. Our host will supply new springs, but to replace the small springs (which cannot be repaired, only replaced) under the horn of the seat requires removing the seat from the bike; this gets old after a while. I have mastered the technique of replacing the long springs while the seat is mounted on the bike. I have also developed a method of repairing the longer springs using coathanger wire; this seems to give the springs longer life than with the OEM spring hooks. Still, I do like the seat.