A Geforce 210 can be had for under $50 and will work fine for your purposes:http://www.newegg.com/Product/Product.aspx?Item=N82E16814125392
I currently use this card on a digital audio workstation with two monitors. I use one VGA and one DVI connection.
Once you have a requirement for two DVI connections, specifically, the price of the video cards jumps past the $100 mark and a two-slot card:http://www.newegg.com/Product/Product.aspx?Item=N82E16814133343
I can't tell the difference in quality between the analog and digital signals coming out of my Geforce 210. They're both great.
If either of your monitors has a VGA or HDMI connection, you can use the money you save to buy an extra share or two.