Just finish the comparison and is revealing.  I had to say LCD projector had improved quite a margin compare to older gen projector such as ae900. My summary is you can't go wrong with either projector. We even cover half of each projector to project the image for comparison. I will put the recommendation as if you are sensitive to dlp rainbow, get LCD. Either technology, make sure that the projector had a good calibration menu and good tracking. Min are good gamma tracking, greyscale tuning and best with cms. Both projector had very good iris and I can't really detect iris movement unless you anaylse frame by frame.

Benq w6000 advantage:
sharpness is the main advantage. Pc desktop will give a very sharp picture compare to LCD. I think part of the issue is due to LCD 3 panel convergence. If you use pc and gaming, dlp will give you max sharpness. Movie viewing you wouldn't notice much of LCD softness unless you have a very good source or sharp picture. 
Brightness - benq is brighter. Max I measure around 21 ftL. Ae4000 max around 14ftL 
Both measure on 1.4 gain carada bw screen. Bright scene I'll give slight advantage to dlp.
Color uniformity - more consistence. LCD panel had slight tint in corners. Not much of a concern as you don't notice during movie, only test pattern.

Ae4000 - better black level. No question here. Darker picture had a pop to it due to lower black level plus perfect 2.2 gamma due to 9 point gamma calibration. Get this if you are black level freak.
More film like which I think due to softer image. It's more relaxing on the eye. If you like watching long session, it's less tiring.
As we didn't calibrate the cms I prefer the dlp color but I believe ae4000 could be fine tune further on the color to reduce the slight red push.
No rainbow, a must for those that are rainbow sensitive. 2 of our viewers can see rainbow. I must be the lucky bunch. 

No winner here, both had strengths and weaknesses. One more note, I feel ae4000 had better pq compare to rs10. Others are welcome to put in your opinion. 1080p projector really need a good source to show its quality so don't feed DVD or 720p.

PS: rontt88, mys_terious and anfieldude, as all of you had listen to rontt88 submersive, how do you feel about DD-12, should I upgrade? Been feeling I could get more kick from better sub. So far the sub blend in to my main speaker quite good.

What I know JVC RS35 had a perfect convergence + crazy contrast so it should be the best of both worlds. The price also out of this world.