Hi Y'all,
I have DLP4080A models in a couple venues, and own an XP4080.
The older models have fewer filters, but enough for my needs.
The older ones have a more useful, four-line display, while the XP units have a much clunkier two-line display.
Not a big deal if you are mostly using a laptop for control.
The XD units have the four-line display.
Sound quality is very good on all of them.
The older DLP units have 2.67ms latency, the newer XP ones are 1.5ms.
I find the older software easier to use than the newer software.
The newer units have a couple build-quality improvements over the older ones.
Thanks and good health, Weogo