The DouX 2 will do fine and give you the options you need.
And here is all you need to know about installing/flashing/using the DuoX2
http://forums.xbox-scene.com/index.php?showtopic=427711
DuoX2 are great cheapmod chips even if most people would suggest using Xecuter 2.6Lite or similar.
Reasons for Xecuter 2.6Lite:
No clones circulating (clones are simply clones of the original chips and are often bad in quality and functionality), More reliable and so on.
I have no problems using cheapmodchips and are currently using Aladdin Advance 32. Now that I have brought that one into the discussion, be advised and DO NOT buy any Aladdin chip! They are most often clones of bad quality.