Legendz: Yomigaeru Ryuuou Densetsu

Both are card game animes with monsters that live in the real world with humans. 

- Similar characters (Shu - Shu, Shiron - Blue Dragon and oth.) - Both have unexpected course of events - Both have similar emotional character  

I enjoyed both series and I love them.. 1. You know, Watanabe Kenji is the illustrator for both Digimon and Legendz and both series have connection with WiZ company 2. Both Digimon Tamers and Legendz start with slow tone, lighthearted, and more like slice of life series so that we can go more into the characters 3. Both started to be dark and edgier after the first-half and it's quite confusing and deep for kids show 4. Both series seem underrated, however they have epic story and characterization  

I've enjoyed both of these animes quite well. Dragon drive is about several friends adventuring with their dragons soaring through the sky. Legendz also has a main cast of characters who are close friends adventuring around with the Legendz, where several of them are dragons as well. If you like dragons and adventuring with in-depth storylines then you should most certainly give this a chance.