I just put in my order for the HP 5450…I should have it Saturday. I got mine from Mobile Planet – evidently they will have & ship them tomorrow; while the HP site is still saying “out of stock.”
Once again, it appears as if there is a model number difference depending on where you purchase your iPAQ: Mobile Planet offers both the 5450 and 5455 (I can't see a difference – and they are the same price), while HP has the 5455. In any case, impressions will follow shortly after I receive it.