The stock app works well for me, but I see a lot of people talking about Touchdown. I have no experience with it. Just curious, what kind of problems are you having with the stock app?
What my problem is, is hard to explain - the problem is that my calendar has problems because I have some problems with the way to add new mail accounts, in the stock mail app, and I just can't fix it. That's why I'm looking for another mail program.
I'm using a Google account, Gmail and a exchange mail account. And because of the Gmail and google account, all my events/task shows up twice in my calender. I have tried to turn off calender sync, in both of the gmail and google accounts, but still, all my events/task shows up twice.
I hope you understand - it's hard to explain
I have now tested the K9 mail app, added my mail accounts and my calendar works just fine