re: 'Smart' system for weight loss

I have a FitBit scale, a Garmin watch and sync weight to Garmin Connect via myfitnesspal. Fitbit and MFP sync, MFP and Garmin sync, so the data makes it over. It stinks they are all not compatible, but they are workable in my situation. I've had to remove access to apps from each other from time to time to get data flowing again, it's only a minor inconvenience and solved the problem. I really like having all of my data in Garmin's app for ease of viewing.