telstra's sidekick data plans
if you look at Telstras current data plans offered alongside the SIDEKICK devices, I think it's something like $30 for unlimited data... really competitive stuff.
I am currently on Vodafone paying $1 per 5 minutes for data on a $49 cap with $280 of calls/txt/data each month. This has suited me so far, on my little sony ercisson. but when I get an iPhone, I would really love an always on 3G connection... and unless Vodafone can offer me something new, I think I'll be tempted to turn to the dark side (go with Telstra).
as far as I know Telstra looks like it has the best unlimited data plan out there, the plans posted from 3 don't look much better... it's all the time, unlimited data on some kind of cap or it's going to be painful and expensive when it comes to iphone users.
one quick note, I believe the data plan/sidekick deal was on a 24 month contract, with the sidekick being bought outright seperatly. not sure what that means for the iPhone but it might be a clue to the way Telstra plans to operate with these kinds of web savvy devices.