I was a longtime Garmin user and had all of the typical frustrations that came along with it. I've been using the K2 for over a year now and can confidently say I'll NEVER go back to Garmin. The touch screen works and having physical buttons is a bonus for those cold days when wearing thick gloves. The turn-by-turn directions are vastly superior to Garmin. Hammerhead updates the K2 every two weeks, so they are constantly squashing bugs and adding new features.
If I had one complaint it would be the mount. Mine came with a Garmin adapter and now I'm able to use it on all my bikes that have Garmin mounts. The Garmin mount is actually better, IMHO.
- High-resolution color touchscreen looks great
- Navigation is the best out there and works without a smartphone connection
- Support for all your favorite sensors including Varia radar
- Integrates well with various ecosystems
- Online dashboard lets you create routes and workouts
- Regular software updates add features and fix bugs
No so great:
- The screen is kind of reflective, so even at full brightness it can be hard to read in direct sunlight
- Small software quirks like occasionally losing the GPS signal or Bluetooth connection to a sensor
- Audio alerts can be hard to hear outdoors
- Battery life is decent, not outstanding
I was a Garmin user for seven years. I've had the Hammerhead for almost 6 months and it is far superior. If you load routes to follow the Hammerhead is far easier to load and more importantly if you get off course it will help you get back on course and not just tell you that you are off course. The touchscreen is far more responsive. If you need support you can actually get a timely response and there is an active online community. Hammerhead is proactive in responding to its user base to add features and functionality. They frequently provide updates.
I used a Garmin 500 for way too long and always hesitated to buy a new computer. This thing is great, screen is nice and clear, touch functions all work well with gloves and still works fine in the rain. Customizing displays is pretty easy and has good options too. Very nice.
I've been riding with the Karoo since it first came out. Best display by a loooong way with by far the most map detail. You can get audio turn by turn directions if you pair an external BT speaker or headset. It's Varia radar display is better than Garmins. Karoo will show you upcoming climb details without even needing to load a route. Updates come typically every two weeks.
Simply the best computer available.