For a while now I have been using nuevasync and mfe for my gmail and google calender synchronization... however in the coming weeks I will need to create a new mfe account for work.

therefore:
1) can I have more then one exchange account?

assuming I can not

is it better to go with IMAP gmail
or Nokia messaging IMAP (with IDLE?)
or to pay for the nuevasync pro membership?

My biggest concern is battery life

I can afford to wait more then 15 minutes to get a message
however "push" would be preferred.

any recommendations?
have I missed a better alternative?

Thank you in advanced