I've also got the Sigg hydration tube, and while it wasn't as bad as Matt's experience it's not of the same quality as Platypus and Camelback and only got used a couple of times. Realistically there's little chance of a platty or camelback bursting - they wouldn't be market leaders if they regularly burst, and I've not had a single failure in 5 years.
Edited: 15/04/2009 at 15:16