They both should be similar but the Xtrememusic has more features and will sound better. Basically, the Xtrememusic has everything the Xtremegamer has and a little bit more; Xtremegamer is more barebones.
They're both fully-fledged X-Fi cards so you won't run into problems with either but the Xtrememusic is more well-rounded.
They're both fully-fledged X-Fi cards so you won't run into problems with either but the Xtrememusic is more well-rounded.