I owned a Garmin Streetpilot C550 for a few years and recently sold it to my son. It was a good unit but the designers oversimplified the interface and omitted displaying a lot of information like latitude and longitude, satellite signal strength, elevation, etc.
The 885T, thankfully, can display all of this information and more. They kept the classic Garmin interface which is very intuitive and added a lot of nice features like “Where am I?”. With one button press you know where you are (lat./long.), and nearby emergency and fuel services. With the C550, these things were buried deep in the menu system. Another nice feature is the ability to touch the 3D map and see it instantly change to a 2D movable map. The speed limit display is nice for people like my wife that obsess about staying under the limit. The 885T also has Lane assist to take the guesswork out of upcoming highway turns. It must not be supported near me because I haven’t seen it work but it’s supposed to display arrows telling you what lane you should be in for your next turn and also have a 3D display with realistic road signs. Also, power up and satellite lock on is almost instantaneous with their “hot fix” technology.
Probably the biggest selling point for the 8X5 series is the voice activation feature. It comes with a small wireless remote that attaches to your steering wheel. Virtually every menu function can be accessed through the voice command system. Ostensibly to keep your eyes on the road while you drive. It works fairly well although when there is noise in the vehicle it can get confused and you will wind up yelling at it. They need to streamline the voice commands as well. After each one you give, you need to wait for a voice prompt from the unit. Sometimes several seconds. Invariably, you will take your eyes off the road to see what the unit is doing. A good example is volume control. It reads back the volume percentage after each adjustment.
Google it and you will find videos of the system in action. Once you learn the shortcuts you will find the system useful.
Another great feature is a user replaceable Li-ion battery(which is a good thing as you will be pulling the battery to reset the unit on a regular basis). A first for Garmin. It also comes with a nice mounting cradle which makes it very easy to remove from your dash. It even remembers the last place it was disconnected and saves it as a favorite so you can find your car again.
You also get a 3 month trial subscription to MSN Direct. They are running a special now, 6 additional months for $20. It’s a very nice service offering weather, traffic, stocks, fuel prices, local events, movie times ,etc. You can also send Points of Interest right from Bing maps directly to your GPS wirelessly. Really cool. The receiver is in the cigarette lighter plug and has it’s own battery. It will receive MSN Direct data even when unplugged.
Bluetooth worked well and paired with my LG phone. Bluetooth is integrated with the POI database and allows you to call them with one button press.
Downsides:
The flimsy sliding power switch feels cheap.
No external volume control. My C550 had a nice wheel that you could find and adjust easily.
Volume, of course. At full blast you may have a hard time hearing the unit over the road noise.(update: There is a 3rd party TTS editor out there that will allow you to adjust volume levels of individual TTS voices. I turned TTS Jill up to 85% (default 65%) and she is much easier to hear in the car-Google TurboCCC TTS editor). I did hook it into my vehicles sound system with a mini stereo cord and it works well. I had music playing from a micro SD card and the system will automatically mute the music for an upcoming turn or phone call. There is a mixer so you can adjust individual volume levels. I had to turn media down to 60% to match the voice direction. I read that the built-in FM transmitter was very weak and essentially useless.
The 4.60 software is very buggy. I have had many lockups requiring removing the battery and also slowdowns leading to spontaneous reboots. I’ve also had the unit grow extremely sluggish. Also, twice while hooking up to my PC, the screen said “updating Bluetooth firmware” ran to 48% and then rebooted. This caused all my BT devices to lose their stored pairings. Today I noticed that my unit was not receiving MSN Direct data. After pulling the battery and allowing the unit to restart, I had full green bars in “Service Status”. Please Garmin, fix these issues!
Be aware that when you register the unit it will ask to load the Garmin Communicator plug-in in your browser. After that is done and you connect your GPS, click next, etc. it will start a software upgrade! Make sure that your battery is charged first before you register it. Also, be aware that the available map update is 1.9 GB and will take a bit to download and install.