I'm using a FL-D filter on my AE300 in "Normal" mode. I like the results, but I haven't tried tweaking to produce higher contrast. I'm seeing around 400:1, with acceptable black level and detail. The FL-D filter cuts the light output quite a bit, though.
Ask on the sub-$3500 projector forum and you'll probably get more responses.
Ask on the sub-$3500 projector forum and you'll probably get more responses.