I'm not certain wether or not the Leo has USB-host functionality. HTC phones usually don't, and without this it's not possible to connect USB-sticks, HDD or other stuff.
Sony Ericsson Xperia Ray: Unlocked bootloader. Ever changing ROMs and kernels. In use (but I want something else).
Samsung Galaxy SII: Drowned
HTC HD2: Broken
HTC Touch Diamond, DIAM100: Sold
HTC Touch Pro: Sold
HTC Vox (collecting dust)
HTC Tornado (Qtek 8300): Stolen at knifepoint in Morocco. (from me that is, not the other way round :P)
HTC Tornado (Qtek 8310): Dead