Ray, I have a Gravity Dropper Turbo that I used for 2-3 years that had zero issues. It's one of those mechanical ones that just goes up or down. I replaced the cable on it once which was easy. For the first few months, I would always forget to use it except for rollers and really rocky downhills. After a while it became second nature, and I would basically put the seat down anytime I stood up. It took a really long time to get used to not having it on the fat bike. I will likely end up caving and getting a dropper with stealth routing (probably the Specialized Command Post) or just use the Gravity Dropper and zip tie the cable to the frame in the near future.
