Well, I liked how light-weight it was, but overall it didn't seem that outstanding to me, and I couldn't notice any difference in speed over Opera 9.5.
Although, the whole multi-process tab thing sounds good, and could be a new great little thing.
Google is full of some pretty smart and analytical people, and I wouldn't be suprised if by the time this is finished, it ends up doing most things better than what we already have. Thankfully, it's open source, so any advancements they make will eventually drive the other browsers to adopt and improve.