Would check the SB forum about driver issues before you buy any card of theirs. My X-Fi Platinum on my second pc had issues with the two main MMO's I play, Lotro and Anarchy Online.
Bsods with Lotro
AO + Teamspeak, losing audio in TS
Removing the card cures both issues and just using the onboard chip. So since the X-Fi cards and well reported issues they had, I've avoided getting any additional card and stick with the onboard card, especially if its a SB. Nothing but faults keep being reported on the tech forum for Lotro if its a SB.
only Titanium if wanting digital output and more bluray/movie orientated otherwise ExtremeGamer would be fine they both have the same EAX version