Heated Bird Bath Upgrade?

I spotted this 20" heated bird bath on a pedestal at Wannemaker's earlier this month and it intrigued me in terms of upgrading our current winter heated birdbath that we keep right outside of our kitchen window.  This bowl is big (20") and comes with the integrated pedestal - you can see the product listing here on Amazon (ahem....that's not an affiliate link, folks!) with all the features/details.

Here's a post from November of last year showing off the installation of our existing heated birdbath.  You'll note that it sits on a little table and isn't super deep.  The lack of a pedestal is (obviously) the reason for the table and I think that the table doesn't look awesome.   And since it isn't too terribly deep along with the low humidity in the cold winter meant that I had to continue to fill this thing up every few days.

The one on the pedestal looks deeper, so I'm wondering if that means less filling?  That's good.

But, the cost of this one seems hight to me.

I also wonder if there's a third way.  Ditch the actual birdbath and go with something else:

A heated dog bowl.

I found this one at (You guessed it!) Menards.  5 quart plastic bowl.  For just $17.00.

Via Menards site.

The depth of this one will certainly mean that I have to fill it up a lot less.  But, could it be too deep?  Five quarts of water seems like it would last for a week in terms of evaporation? 

Part of the "Certified Wildlife Habitat" checklist is providing water to wildlife, so the birdbath/dog bowl continue us towards our commitment to providing a habitat. 

At $17 - and being in-stock at the Bolingbrook location, I'm thinking that we're going to give it a shot.  If it doesn't attract birds, I'm thinking it might give some of the squirrels who wander over to our feeders a little bit of water during the winter.  Next time I get back to the store, I think I'll pick one up and give it a shot.