I'm a republican and in no way would vote for either of these two in the main election. However, with that said I think Obama could be very good for the country.
First and foremost it is my belief that there are certain individuals (Jesse Jackson, Al Sharpton, etc) who have a vested interest in continuing racial strife in America. They use every perceived instance of racism to further their cause and not the cause of black Americans. I think their approach clouds the racial issue such that when true, harmful, and disgusting racism does happen it can be dismissed as their they go again. Their approach cheapens a very serious problem that still exists in America.
With Obama (or any Black American) as president, the arguments and exaggerations of the Jesse crowd loses steam. They will be seen for the shakedown artists that they are. Then, we can hopefully focus on what the true issues are and maybe solve them.
I also could live with Obama as my president.
Hillary on the other hand is a lying, cheating, scheming individual with no moral core who will say or do anything to obtain and maintain power.