I'm owner of a HTC Touch, and I love this mobile phone and Windows Mobile 6 pro. Before, I tested Symbian, it's good too, but not so good (imao). For me, Apple products are limited compare to Windows Mobile. I like the way to use the phone by touching screen, it's easy, well done. I use Putty mobile and ssh sessions are easy. There are numerous good task managers, folders managers, and good system tools. It exists a good Windows RDP client too (remote desktop). Morover, embeded HTC tools (like photo software, dialer, plugins, touchflo, htc_cube...) are really good and usefull. By using Windows Mobile center on Vista (or ActiveSync on XP) you can synchronize with MS Outlook, OneNote, WindowsMedia etc like others PocketPC or WindowsMedia capable devices. You should test a HTC of the Touch series (touch, touch duo, touch cruiser...) at least one time in your life Others HTC (as TyntII) are really good too, near a full PocketPC, with graphic accelerator included, and could be "touch capable" by installing something as TouchCommander or TouchFlo only.
P.S. (for Josh ^^) I am left handed too, screen of HTC Touch can be reversed.