Good to hear the third gets better. I was a little disappointed by the last case in the second game, which builds up brilliantly and then suddenly becomes retarded. I won't expand on that, no need for spoilers. I didn't like the "psyche lock" mechanic either. Despite that, it is a great game, just not as good as the first.
I'm going to work my way through the series and hopefully have them all played by the time the Edgeworth game is out.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.