I currently have a 15c. Armored, and love it. It holds everything I need and then some. I've had it for about 2 years, and it has worked beautifully. It holds humidity very well (only have to change the Boveda every ~3 months, depending on use), and is tough as hell. I've dropped it, but haven't run over it...yet.
I used to have a 15ct Cigar Caddy before I upgraded to the Armored. I prefer the armored by far. I think the 18ct. Cigar Caddy is much better than the 15ct I used to have. By comparison, in the 15 ct I used to have, it was very tight if you tried to fit 15 sticks in it with all 3 trays. If you pull out a tray they'd fit, but if you didn't, you'd have 3 rows of box pressed sticks (assuming you could close it).
As for the trays in the Armored, I have had no issues with larger ring gauge sticks in there. There has been plenty of room. About the only issue with it's size that I've had is that I had to lay a Sancho Panza Sancho at an angle in it.
I'm very satisfied and would definitely recommend it.