I need 6 email addresses hosted via ms exchange server + mobile support for blackberry/smartphones ...and standard "explorer" access to about 30 gigs of data on a server...what are my best options?

here are two options for about $20 US per month per user:

http://www.alentus.com/exchange-host...e-exchange.asp

http://www.mailstreet.com/exchange/pricing.asp


are there canadian options? where I can call a human for tech support etc?