I'm just remembering my experience with paroxetine, and I specifically remember a few things - good and bad, that went with that experience:

Firstly, I had much, much less anxiety, probably to the point where I felt more level (anxiety was still present but I had no more panic attacks and I was obsessing less). Secondly the depression, the first week on paroxetine my mood lifted almost immediately, and the effect was like turning on a light bulb. And lastly, amongst the benefits were a few problems, like developing aggression, laziness, tiredness and then later some emotional numbing.

I'm trying to weigh up whether it is worth me going back on paroxetine since it had the most dramatic effect on my anxiety and depression. But, it also had it's fair baggage of problems.