If you want an accurate spring driven watch then one fitted with GS spring drive movement is the one to go for. My Omiwatari runs at +0.25-0.3s a day. I generally set it about 5s slow once a month and forget about it the rest of the time. On the odd occasion that I forget to wind it and I notice before it has fully wound down, it nevertheless maintains that accuracy. I think that is down to the way the tri-synchro regulator is constantly self checking.