I would go with an HT Omega Clario but going PCI at this stage is a dead end even though that's an excellent card even worth losing functions. PCI being dead i am waiting for a good option and some of the Mobo sound even has HP op amps and if i were using cans would be ok with that but i am liking the surround. Great card though not that it is supported any more, funny though they brought the Audigy back and in my experience this is a better chip & card and hey all the extras. The X-Fi (for "Extreme Fidelity") was released in August 2005 and was initially released in XtremeMusic, Platinum, Fatal1ty FPS, and Elite Pro configurations. Three additional models were added in October 2006; the X-Fi 'XtremeGamer', X-Fi 'Xtreme Audio' and the X-Fi 'XtremeGamer Fatal1ty Pro'. The 'XtremeGamer Fatal1ty Pro' is a mainstream gaming model which is identical to the high-end gaming Fatal1ty FPS but lacks the additional I/O box and remote control accessories; the 'XtremeGamer' is a model optimized for gaming which lacks the I/O extensibility of the higher end X-Fi models; the 'Xtreme Audio', despite the "X-Fi" label, is the only product in the X-Fi line not using the EMU20K1 chip (CA20K1) but an older chip similar to the Audigy SE and SB Live! cards (CA0106-WBTLF) and thus lacks the hardware acceleration of 3D sound and EAX sound effects, gaming and content creation features and the I/O extensibility of all the other X-Fi models. It is not marketed as supporting gaming or EAX. Creative also released an external solution (named x-mod) in November 2006 which is listed in the same category as the rest of the X-Fi lineup, but is only a stereo device, and lacks the specifications of the internal offerings. The 130 nm EMU20K1 audio chip operates at 400 MHz and has 51 million transistors. The computational power of this processor, i.e. its performance, is estimated as 10,000 MIPS (million instructions per second), which is actually about 24 times higher than the estimated performance of its predecessor—the Audigy processor. It is interesting to note that the processor’s computational power is optimized for the work mode selected in the software. With the X-Fi's "Active Modal Architecture" (AMA), the user can choose one of three optimization modes (Gaming, Entertainment, and Creation), each of which enables a different combination of the features of the chipset.