here is the rundown on travel humidor manufacturers.
on large travel humidors (18 and up), Cigar Caddy (Otterbox) and Xikar are the same exact case. Neither company manufactures their own case, they are made by S3 Case. Cigar Caddy chose to use the Boveda (best in my opinion), and Xikar chose to use a green foam humidifier. So Bottom line is pick what humidifer that you like best.
On smaller travel humis, there is a difference between Xikar and Cigar Caddy. The 5,10, and 15 stick Xikars are made by S3 Cases. S3 is actually using old Otterbox molds. There is nothing wrong with them, but you are getting old style cases. Otterbox made some improvements on hinges and gaskets, and these improvements are in the 2,5,10, and 15 stick Caddys. Cigar Caddy is the better choice.