Originally Posted by NJBlackBerry
The web clients are all the same. They send e-mail 24 hours a day, but every 15 minutes. The fastest way to get your e-mail is either through a BlackBerry Enterprise Server - the BES - or by having your e-mail forwarded directly to your BlackBerry (and not collected by the web client).
I would agree. Through my experience, having your emails forwarded directly to your BB seems to be as instantaneous of a push as is possible.