I am very happy with the Blackberry (Crackberry!). Smart phones are a VERY valuable asset to your business by expanding all your options, making you very versatile, and super productive. I would never go without one now.
Any down time in the field now can be spent EMAILing a client, taking notes on supplies or parts with the MEMO/NOTES PAD, or drafting a letter or plan with the memo pad (I use this all the time to write things), I'll sometimes just go sit in the truck for 30 mins while the guys work and I need a break to recuperate, or to generate more business and email a client when I'm inspired, do follow-up emails, etc.., write down heady, good, stuff when I'm inspired, as long as I like, I can write pages, then easily copy and paste them into an email to myself after if I want to have them later in word processing format for use on my computer.
Planning your schedule in the DATEBOOK can be a great tool when really busy or needed, or putting date & time reminders for easy to forget appointments in the datebook, daily reminders, weekly reminders, monthly reminders, repetitive reminders, the features are endless.. I do not always enter everything in there, but still use it very regularly, sometimes I use it all the time without fail. Depends on how patient I am.
Of course the ADDRESS BOOK has many great features such as an easy to use entry of multiple phone numbers, fax numbers, and email addresses. I TEXT a lot with clients now more and more on occasion for small details such as, "Be there in 15 mins. Ben, Greenstar Tree" Or "Sorry running about 20 mins late. See u. Ben -Greenstar Tree" etc...
Also, having weather.com access, and espn.com so I can constantly keep an eye on weather patterns, or sports scores, if I really wanna work, but dont want to miss out on the game!!
The CAMERA obviously can be great. I took a picture of some baby racoons up in the top of a tree!
A VOICERECORDER I use a lot to record meetings with clients, for training purposes, or just for personal voicenotes.
The CALCULATOR I use occasionally.
I just started using the free Sprint GPS occasionally on the phone when I do not want to use the mapbook.
PANDORA radio is AWESOME!! Takes 1 min to download, and once you have it, takes a second to turn on and GREAT tunes whenever I want now! Better than satellite radio, try it.
All in all I'd have to say the blackberry curve is a pretty durable little phone too, with great battery life. I've dropped it many times, its been banged up, and has withstood over 1.5 years of hard use, and the battery will still go two days of all day use on just one charge. None of that stupid Nextel crap of phones dying ALL THE TIME which I endured for over 3-4 years with Nextel crap!
Its a great phone with many other features. I learn stuff new ALL THE TIME on it. ####, I just found my Google maps icon which I never use, and will probably use on occasion when the map book is buried!
Good luck.
Oh, PS. VERY EASY TO JUST PLUG INTO YOUR COMPUTER AND DOWLOAD ALL YOUR CONTACTS AND ADDRESS BOOK ENTRIES FOR
BACKUP WITH ONE CLICK OF THE MOUSE. SUPER EFFICIENT AND EASY TO USE BACK-UP SOFTWARE. I'm not a big computer guy, but this is easy to just plug in. Automatically the software opens and says backup. All you do is click "yes" and it does it all automatically and you're done.