Well, technically the Sony uses a different kind of LCD technology called LCoS. I'm not too sure if that model uses that technology, probably does, but there are a few differences between LCoS and regular LCDs like the one in Panny AE3000 and Mits 6500.
There are pros and cons on each. LCD PJs are by far the most popular because they are the most cost-effective PJs. They have a moderate to good lens shifting and are generally good for 90 to 120 inch screens. The lens shift allows a more flexible placement of the PJ and are better for rooms that does not require you to place the PJ on the center of the screen. The newer LCDs provide good blacks and great color reproduction.
DLPs has come a long way, but they have the least flexible lens shifting range, so basically, the PJ has to be nearly at the center of the screen (horizontally). The rainbow effect has been minimized, but some can still see it. They have very good color and black reproduction though.
LCoS are an advanced LCD that I think only Sanyo and Sony offers it. They have excellent lens shifting options, good image quality, and black levels. But the PJs itself tend to be bigger than LCDs counterpart. So some Sony PJs can be 1.5x to 2.0x bigger than other LCDs PJ.
So...in a sense, don't go with DLPS if your room won't permit it because it's not very friendly with lens shift. You can't go wrong with LCD PJs, but if you want the best performance, LCoS is probably the way to go. But I'd recommend a Sanyo not...Sony.