best pc sound card

Hi I am having a new PC built for gaming etc.  As with my present PC I use optical out from the audio card to the processor.  I have a decent componets Mcintosh mx122 processor Mcintosh 611 amps for the front Magico S5 for the front speakers, 2 subs and Mcintosh amps and speakers for the surround and center channel.  I would like to get the best quality audio card internal or external.  I would also like to have an HDMI connection between the audio card and the processor instead of optical.   Any advise would be appreciated.  Thanks