I'm running a new HyperShot on the back but have a few different lights that will fit the mount, so I can keep a backup handy, and also have a cheaper seat post rear light, and run a Hotshot on the back of my helmet. I removed the included Juiced taillight/reflector because it ran on AAA batteries and I wanted to use USB rechargeable Li-Ion based lights. Have not mounted a rear reflector yet, but working on it. I would like to try retrofitting a good usb rechargeable light into the original Juiced rear light housing, so I hope to try that one day.
Up front I'm currently using a Flashlight mount for an extra wide beam neutral tint Zebra 700 for trails and unlighted streets. I'm waiting on the Fenix BC35R for my main light since I use a BC30 on my other bike and I like it. The Juice included light might be OK, it's fairly bright, but not a fan of the tint and I hate to waste potential motor energy on lights. Pics when I'm done.