Differences

Here are two really big differences between Truly and Maggie.
Truly, a big, old boy, is incredibly graceful and polite in just about everything he does.  He's the most gentlemanly hound you'll ever meet.  When he's offered a hand-fed treat, he will approach you, pause to make eye contact and confirm that you really mean the treat for him, then he'll grasp it gently with his very front teeth and slowly remove it from your hand.  He'll walk away with the treat and eat it privately.
Here's Truly accepting a snowman Peep:

Maggie, on the other hand, will spy a treat from across the room and tackle you for it.  There's nothing delicate about that little girl when it comes to treats.

Here's Maggie accepting the snowman Peep:

Look at her eye!  I once saw a documentary on great white sharks.  The camera caught a shot of the shark's eye in the midst of a feeding frenzy.  Why, they're exactly the same - same intensity, same ferocity.  Treating Maggie could be down-right frightening if you didn't know her.

Another difference is that Truly obeys rules.  One rule is that the sofa is not for hounds.  It's for people.  Truly has understood the rule since the first day.
See?  Good boy!

Maggie doesn't understand the rule.  See? 

You can tell by looking at her that she KNOWS better, but she just couldn't help herself.
There are, of course, a multitude of other differences between these hounds.  However, despite the many ways these guys are different, they are both exactly the same in that they have made such awesome pets for our family.  The best way to say it, I guess, is that every day is another greyt (sorry, I had to do it) adventure!

P.S. -  Just so you know, there are a bunch of gigantic dog beds in the house.
In fact, here's Maggie enjoying one of them: