One big question must be answered, right off the bat: Why is each color a different price?
I recently lost my khaki one after years of trouble free use and want to get an identical replacement, but it is $18 and the green one is $11!  The leapard print is in between these two.  No two have the same price.  Isn't that a bit wierd? Do I save a few bucks and get green or splurge on my favorite khaki?
I love the pop open mechanism.  I open the car door to get out in the rain, push the button and pow! it opens.
You have to push the button again to close it, push the telescoping shaft all the way down, then push the button again to open it rather than being able to open it from the shaft extended position but it's a small price to pay for such a sturdy well made item.
I feel so unpractical about this but I will pay the premium price to get the color I want.