What's your preferred DAM system?

It's come on down from high to start looking for a DAM system. I've been looking at iconik so far and feeling good about it, but wanted to know if people had used it and liked it. In particular, how it was at object, face, and scene detection? This is crucial because we have clients with specific products that need to be recognized so it's crucial the forbidden technology we all secretly hate is being used. We have about 2 Petabyes of footage, so also curious how long it might take to sort. I should state that I've also looked at Axle and Canto.

Salud!