I got his phone because it had a great deal just before Xmas. $99 included the external battery, collapable keyboard and car charger. Without the price (at the time) and the extra goodies, I may not have done it.I orignally wanted the Maestro. This gave CF and SD card slots. I wanted the CF to run my digiprojector, and CF offers a lot more expandability for modem cards, GPS and such(and when I was looking, SDIO was just surfacing).But along came the Thera, and priced right. Bonus, it was a phone. Good! For after 10 years of owning Nextel, I *loathed* being Bleeped all the dang time. ANd for the extra $4.99, I can run it over with a car and they replace it.Now, as a PDA, it functions. In fact, it's saving my life (so long Filofax!). Since it's PPC, it's seemless with my Office XP on both my desktop and laptop. Personally, Palm OS doesn't fit my bill. I can work anywhere with it, and it's made me much more productive. I do envrionmental surveys and inspections and use this to recond data in Excel, write the report in Word, and email it to my client or fax it to my office (acts like a printer). I don't need to return to the office for days, and I don't have to carry around a bulky laptop, looking for phone jacks or hotspots.As a phone, well, okay. It bites. Never gets a signal as strong as my other Kyocera phones, even when side by side. The modem freezes sometimes and refuses to make calls unless I swtich the modem off and then back on. I like having the speakerphone and I drive mostly with my Earboom on, but wish I could hold it too my ear. While not advised, I found you can turn the volume down, flip the PDA upside down, and *kinda* use it that way (read: cheesy)Now, the internal battery is limited if you leave the screen on all day (lasts maybe 6 hours). WAY LESS IF THE BACK LIGHT IS ON! With the external battery, I can use it all day. Having the modem on uses more power too, but with it off, you can't get phone calls, emails or surf the web.But you must have the car charger and put it on as soo and you get in a car. That extends the days use.Get the keyboard. It's very functional, and with a little warm up, I can do 60+ words a min.Other accessories I purchased:An Arkon PDA holder that mounts to the windshield so I can easily dial numbers or scoll my contacts.Pharos GPS, so I don't get lostExtra wall charger for travel.Extra cradle, for use with my Laptop on extended trips.Audiovox headphones (waste of money)Bluetooth Ear boom with Bluetooth Dongle (no more wires).Overall satified.