After thrashing my 45L CiloGear WorkSack on a single overnight climbing trip I sold it. I would not recommend that pack for any sort of alpine rock use.
If you're willing to go used as of earlier this week someone has a circa 2003 65L Arc'teyx Khamsin at Mammoth Gear Exchange in Bishop ($125 I think). I have the 38L model and it's been the best climbing pack I've ever owned.