Helio's are generally very good and if you read their forums on various sites, customers are quite happy with their service.
They piggy back on Sprint for service and get EvDO. The Ocean is a sweet device with tons of communication potential and GPS. It's relatively cheap but no where near as fancy as the iPhone. It's like what a Sidekick should be.
That said, I feel bad for them as they're gonna get whooped by the iPhone.