Mini Ukuleles: Which one should I buy?

The first time I saw someone playing a "mini" ukulele, I knew I had to have one!  Maybe you've seen one or played one and felt the same way.  By almost all accounts, these are novelty ukes...but I use that term loosely.  They do have a very different and distinct sound.  The cute factor probably puts them in the novelty category more than anything. 

There are a few different companies making these right now, so which one should you get?  Here's a quick rundown of some of these mini ukuleles with price points...starting with the most expensive....