Sean McCown had a great session on this topic at the last SQL PASS Summit (DBA-307). Very much worth your time if you have the session DVD. One of his points was that the performance gains when taking the backup can be impressive, but on a restore they can be critical to reach a tight SLA.
That said, my company has stepped away from striped backups wherever possible to reduce the admin headache. They were a critical to get backups completed for our larger systems ten years ago, but modern hardware and backup compression have reduced the need in our case.