Suggested by iHome to be the true successor to the extremely popular, well-known iH5, the new iH9 Dual Alarm Clock Radio ($99) is arguably the company's most significant update yet. Like the many other versions of iH5 that have appeared over the past two years, iH9 only modestly tweaks the same wide all-in-one cabinet design of its predecessors, but for the first time replaces the front screen with a high-contrast white on black display, rather than…