XGL or Aeroglass

Everyone knows that there are two 3D based eye candy application that are out or are coming out very soon. XGL is the add-on app for Linux that gives a cube, and really integrates Linux’s 4 desktops, also there are other eye-candy features such as rain, and zomming in and out of a windows, changing transparency, also alt-tab, has a picture, plus bring the window you are looking at up front and making the other windows transparent. Aeroglass is what is shipping with Vista Home Prememium and higher. It has some new features such as scrolling threw windows, and live preview. I just want to know what people think of the two new 3D desktop environments, which they prefer and why.