[MrScott]

I've been using it for a few months now.

Web Interface is solid though I'd imagine too big an adjustment for most users. Some hiccups with IMAP, calendar sync/sharing issues with Outlook/iCal to work around, Doc sharing is nice but no real notion of folders.

Coming from hosted (non-Exchange) email I'd recommend it - as close to zero-maintenance as it gets. Considering Exchange has the advantage of a dedicated client app (Outlook) Google's done a pretty good job.

Where Apps has the real advantage is over time it will only improve and the upgrades come for free.