Bluetree, thanks for the Arundel sideloader info. Those are pretty cool! I do that have problem on my mtb, I've always just used a Camelback when I'm on that bike.

Oakleaf -- could you write a little more about what's being compromised with a smaller frame? Strength? Speed? Weight? Handling? Just curious, since we're on the topic. Would be good to know if I ever outgrow my current equipment.

Amy, I don't think any of the issues listed should be a reason not to buy a bike that fits your body and the type of riding you want to do. If your bike doesn't fit you, you won't want to spend a lot of time riding it.