I'm with jb. I get the same email on my Peek before it ever arrives on my desktop computer. If I am expecting something, I can always do a send/receive. Like jb said "This is a low bandwidth device it's cheap and it works."
I'm cheap too. If I could cost justify a Blackberry, I'd have one. I cannot, so I have a Peek. Long live Peek (and my lifetime Peek device)!