Hi,
I´v read many soundcard´s review and I can not decide which is the best for me .Here are my soundcard requirements :

1, Clear and dynamic sound
2, Min. 5.1 Channel for Dolby Surround sound
3, Centrafuse supported
4, Ability of 2-way active crossovers for front L+R channel
5, Time alignment
6, Room correction will be great
7, RCA connectors

Here are my favorites :
http://www.audiotrak.net/products/prodigy71hifi/ . Looks great,but I'm worried of extremely low output voltage,that could cause noise induction.
http://www.esi-audio.com/products/gigaporthd/ .I like it for 8 output channels with RCA connectors.

When I choose Prodigy 7.1 Hifi,I will need very good shielded 3,5 mm Jack to RCA cables.Which cables should I use?
Recommended sound card could be different like my favorites and the cost should be max. 250 USD.
P.S. : I will point out,that I never hear any other soundcard,like onboard integrated audio codec .
Every help will be very appreciated