HTC Desire family portrait (video)

So you own a Desire and want to know whether its new brandmates -- the Desire HD and Desire Z -- will represent an ergonomically appealing upgrade? We've got you covered with both a gallery of shots below and a neat video after the break encapsulating the size differences between the three models populating Desireland. Okay, we couldn't resist, we threw in an iPhone 4 for comparison's sake as well.