My latest would be the iPhone 5. I'm still playing around with it to list my favorite features but the panoramic photos and Siri are pretty neat. The processor is much faster than the i4 was but the price tag is pretty hefty for the 64 gig so if you're low on funds I'd go with the Galaxy S. Apple also changed the plug end so plan on trashing all your old chargers.
and coming soon... The Devil's Lab