Hi Cedfire,
I have never owned a Eureka tent but I have spent a few nights in them as my hunting partner has one (a 2XT?) and we had a Timberline Outfitter 4 at work.
The Outfitter was bought about 15 years ago for use while doing remote Forest Management Inventory (timber cruising), I remember it as a tough tent with lots of room as we only slept 2 in it and it was ment for 4.
I have not checked out the new tents on the market, but I was OK with the Timberlines in the past.
Mike