I have the fitbit ones. They don't like being moved either but once they've calibrated themselves, they're dead accurate. I've got them tucked into an out of the way niche in our bathroom so don't need to move them. Expensive, but managed to pick them up in a sale quite cheaply. I like that it links to the online fitbit account so I've got everything charted there. So don't even have to try and focus my eyes when I jump on them first thing in the morning, just check back on the site or app later. :giggle:
Before that I had the salter stowaweigh (something like that) ones which were specifically designed to be able to put them away without it affecting the accuracy. They were quite good, especially for the price.