Best app for Outlook email. So far

I have tried many different email apps and this was seems to work best for my work email (hosted on an exchange server). Works well on iPad and iPhone. Only issues are 1) it is sometimes slow to sync and 2) it cant run in the background so alerts are kind of useless. Im actually considering the latter issue a benefit as I dont jump 200 times a day to respond to an email.

Binorx about Mail+ for Outlook