The question is not whether they are able to run XGA via autosynch - but if they can do XGA in
native mode.
Native mode is indicative of pixel density. And pixel desntiy is what will give you a clear, sharp picture.
The projectors you are looking at are not XGA - they are SVGA. SVGA is obsolete in DLP and LCD projectors and, if you can avoid it to get XGA - please do so.
I would not go with either of those Epsons, either way.
My principal beef with those units is that they are very bulky. They are inconvenient to position over a table, eat a few inches of throw distance, are inconvenient to transport and - to top it off - the Epson EMP S1H (which I have used before) is very loud.
The EMP TW 10 is also made for home theatre and is too dim at 1000 ANSI. If you were buying it used or getting it for a song - ok. But new? No.
Please look at this unit on the site you pointed me to for the Epsons:
http://www.hifipriser.dk/Listprices.asp?ID=196036
The BenQ MP620 is just the sort of proejector you want if you can afford it. Several people from ENWorld have picked it up and all of them are very happy with the unit.
The Dell 2400MP is another good candidate.
If these units are just simply way too much for your group and price is the driving factor, I would go with the Acer you pointed to originally before the Epsons.
You can also look at used projectors on ebay if price is the driving factor.