I have used an Ericsson R520m for about 6 months, and it is close to the best phone that I have ever had. It has a comprehensive set of features, including Bluetooth (which was the main selling point, so I could use it with iSync and Clicker on the Mac) and a pretty good speakerphone. What's more, it has an extremely impressive battery life, and also has a status monitor which tells you more or less exactly how much standby and talk time you can expect at any given moment.
As far as phones go, it's quite capable, with voice dialing, automatic profile selection based on time of day or attached accessories (for example, plug it into an Ericsson car holster and it'll switch to the "car" profile), and with a nice, loud speakerphone which also has a proximity sensor to automatically switch to normal volume levels when you put it to your ear -- which also doubles as a handy way to interact with alarms.
Unfortunately, it's not without problems. First off, the Bluetooth implementation is a bit buggy, and sometimes crashes the phone's OS. Additionally, pairing the phone with a Mac requires that you initiate the pairing from the phone, or else iSync won't recognize its address book functionality. Also, leaving Bluetooth activated severely impacts the power consumption; with Bluetooth disabled, the phone can go 5-6 days between charges, but with Bluetooth enabled it must be charged every night.
However, the biggest nuisance by far is that the phone's operating system provides a "quick power-off" function which is activated by holding the power button down for 10 seconds (which is quite a bit longer than it takes to remove and reinsert the battery). This function activates whether the keypad is locked or not, which has caused the phone to turn off while sitting in my pocket on numerous occasions. It seems like such a worthless "feature" which causes more trouble than it could conceivably solve...
Still, all in all this is a good phone available at a good price, and is a great choice for people who want a Bluetooth phone but don't care about cameras or color displays.
Recommended:
Yes
Amount Paid (US$): 75
Recommended for: World Travelers - Works Anywhere and Everywhere!