The 3 Plus has an updatable microprocessor, and RECCO receiver, while the 3+ does not and comes in green.
I bought the Hydromedary 3L soon after my, few month old, Camel bak breached the bottom seam in the reservoir, and filled my pack with water early into a day hike. I've been using it almost daily for the last year and couldn't be more impressed with the construction. I apparently am pretty abusive on my gear, or at least my standards for durability are very high, and this thing is bullet proof. it's a great product, and I would recommend nothing else. MSR, once again, sets the standard for reliability.
Can the snow saw be applied to the standard beast?
Well what is there to say... It saved my life... Literally! Wear one!
It does come off. Very easily too, and locks in great. Just bought this thing and it's sick. extends longer than most shovels, packs down smaller and has a nice big blade. Solid shovel