Thanks again for all the advice - It looks like they haven't changed the screw top, thanks for making me aware of the problem.
We found our gift card to Bass Pro Shop and bought 3 - My husband bought the MULE, and I bought 2 small (50 ltr) CB's for our 8 year old and I. They were $15! Unfortunately, they had no WSD packs, so I'm going to see how I like the small one, and then wait for a sale at REI to come up.

My son and I had our CBs loaded and in the freezer for a ride today, but the clouds and lightening are coming our way.....so we're postponing until tomorrow.

Lorie - your LBS is right; hybrids are the new bike version of SUVs!

Patty