I was glad to see the return of Miror B. in XD! Both games are nice, but there is more variety of locations in XD. With the coastal town, ect. Additionally, I like how I was able to choose which path of evolution for my Eevee, and that I didn't have two eeveelutions. I mean, I love my Vaporeon! Though the wild pokemon encounters were limited, it at least existed, plus you can catch a FLYGON! And, generally XD offered more pokemon to obtain. However, Colosseum offered a bit more as far as the storyline. At the end of the day, Pokemon is about Pokemon, and XD appealed more to me in selectivity aforementioned.