Hi levisalmon,
It sounds to me like you're looking to run an eyefinity display on a single card that will be reliable and let you play most, if not all games, on high to max detail.
The card below is a good solution for your problem:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102982
SAPPHIRE Radeon HD 7970 OC 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card (11197-01-40G) - $479.99
Please note that to be able to run eyefinity you will need a mini-display port - DVI active adapter.
http://www.newegg.com/Product/Product.aspx?Item=N82E16812200944
StarTech MDP2DVIS Mini DisplayPort to DVI Active Adapter - $25.99
For max compatibility you are going to want to try and use all DVI.
Monitor 1 - Mini DP - DVI w/ DVI - DVI Input
Monitor 2 - HDMI to DVI input
Monitor 3 - DVI to DVI input.
Best of luck,
Shinseina