>>24692598Colosseum would have been much better if it werent for the awful selection of pokemon they hand you throughout the game. It's unnecessarily difficult without using the legendaries. It's no coincidence that they primarily give you Gen 2 trash.
XD is better if only for the decent variety of pokemon you get, but the game is so fucking easy it gets boring (until like the last rush of bosses at the end). I like what they did to make the shadow forms more interesting with their expanded moves and strange type combinations.