Most likely i'll get the 590, those extra features should come in handy and i do plan to use 8800 GTS in SLI when i get a second card. I will definately give Biostar some serious thought and i will research it. The only problem i see with it, is that its not certified by nvidia for SLI, while Asus and Gigabyte are. Since its my first time building i just prefer to use certfied components to play it safe, but it doesnt mean that i wont get it.
Thanks for all the input, guys!