If you want a cheap full featured exchange account without setup fees etc. Check out
www.1and1.com I pay 6.99/month for 1Gig of space along with full connectivity to Outlook on your PC. I could not live with Exchange not syncing my calendar contacts and notes with my home and work copies of Outlook. In my opinion the Push Email is just 1 of 3 major features since I already have my contact lists in outlook.
mail2web is nice if you just want email pushed to your phone for free/cheap. Full sync with Outlook is ideal.
http://order.1and1.com/xml/order/Mai...op&__lf=Static