Went from a 30lb Explosif and took it done to 27lb, dropped that via a ScandAL to 26lb and then 25 before going carbon at 22lb. Then went back up to 30lb with a Marin Wolf Ridge. The Marin, like the explosive, is just a good bike to ride and will do anything I'd ask my hard tail to do, and feels great too. Nothing wrong with a 'standard' weight bike.
Trouble is, when the Marin was out of action for a bit, I built the ScandAL back up from being a hack to it's 24lb best, took it over the hills and...it was utterly fantastic. And when you hit the Tarmac at the end of the ride: wow.
Light is good too.