I also had a CW winder for awhile. Yes it does help with handholding the camera. I had no problems with misfiring. The remote control was nice. But, in the end, I didn't like it. It's quite noisy (I like the sound of the Hassy firing, but the winder noise I found unpleasant). I also didn't like the bulkiness of the setup with the PME 45 prism. Overall, I found the Hassy 503cw with the cw winder nowhere near as refined feeling and sounding as the Rollei 6008. It all depends if you feel you need a winder.