Hi,
wanted to report something positive..
I got a HTC Legend which runs Android 2.1. I'm using the built-in standard exchange client since 2 weeks.
No problems so far, everything works as expected! Didn't use more advanced options though. Only used it for syncing contacts, calendar and email. I think the built-in client doesn't support any other features anyway..
This works like a charm out of the box!
Will give TouchDown Exchange a try the next week which is the killer-app for Exchange supporting multiple mailboxes et.c.
Will report back with an update.
Max