I need recommendations

This weekend I plan to try to transplant the buttons from a Logitech mouse that I have been using lately and has been holding for years and put them on my mx ergo trackball, which I am using much less than I would like due to the unreliability of its buttons and in case things don't go well I will turn to the wisdom of the community: with which trackball would you replace a Logitech mx ergo among those on the market today?