The Sttaf, although designed to work with a wide variety of electronics, tends to only sound its best when paired with tube gear and placed in small, sealed off rooms. It also requires fairly precise positioning; as most Totem's do.
I owned a pair of Sttafs for 2 years, sold them only to upgrade to Mani-2s. I think you need to be careful interpreting this statement. While it may be true they do their best in these conditions, that's only a little bit better than under most any other conditions in my experience.
I found them fairly easy to place (ie by comparison to every other speaker I've owned). While they are wonderful with Tubes, mine were wonderful with every amp I used. And while they're more suited to a smaller room, I found them quite nice in a 16x24, and 14x20 open rooms (maybe these are small?).
I wish I still had mine!