Which is your favorite Camelbak?

[AutumnBreez]

I have had my eye on the Siren for the most part because it is smaller and lighter, I can put on a saddle bag for the tools and CO2 pump, but it has no where for extra clothing for quick weather changes or after ride to keep warm. Suppose I could fold it in there with the bladder but the condensation may make it damp, could put it in a plastic bag though... hmmm or maybe I could put it under the front flap? Lobo is a bit larger for real long ventures where I can't refill with water and for extra food. Siren now, Lobo later is what I may opt for, but will continue to watch the posts for ideas.