As long as the speaker hits the performance requirements they are fine. Just not ridiculously overpriced like most other THX speakers are.
Select bookshelf speakers $350 each. Ultra central channel speaker $400. Ultra mini towers $500 each. 12 inch Ultra sub $800. 12 inch Select sub $500...
It is to fair to point out that Monoprice recently released THX Ultra and Select speakers for very reasonable prices. I might consider them for my next speaker upgrade.