I used both terminal 3 and terminal 1 lounges at Dubia around lunch time last week, Terminal 3 was much better for food, much much bigger selection. Fish, Chicken , Wedges.. Lots of solid food Western style food. Terminal 1 had a much smaller selection most of it was more asian in style.

However if you are not bothered about the food, I think terminal 1 is better, there was only a handful of people there, so if its a shower and a relax you want it might be the better option.

Terminal 3 at the same time was very busy, had problems finding a table.