The original post wondered if 30lbs was the limit for an all day bike. My prefered bike is my 2004 S-works Enduro which comes in at up to 32lbs depending on the wheels and tyres I use. I'm not sure what all day riding means really but I'm happy with the Enduro for 40 miles with 1500m + of climbing. Rarely ride further than that but have taken my 23.5 lb Ti hardtail for around 60 miles. That's still a tough enough bike for XC riding with very ordinary wheels and tyres so that could get down to 22lbs I think though does have V brakes.
My other bikes are a Soul that comes in at 28lbs and a SS rigid Inbred that I haven't weighed. Have a Pinnacle CX bike at about 20lbs and an all Ultegra Lemond Chambery that's about 18lbs.
