so i need a couple suggestions for a graphics card at around the $180-$250 range. i am using a 20" 1680x1050 res monitor and want it to run pretty much everything i throw at it on high settings. something that will run extremely well in crossfire or sli later would be cool too. i am thinking about getting an hd4870 but want some opinions from people who know a bit more about it than me. thx