Personally... I feel like those stump grinders do more harm than good.
They pack the soil when it's most vulnerable... Wet clay should never have heavy equipment on it...
I value those stumps as a support for my containers... And those containers rot the stumps pretty quickly.
I would create a nice perennial garden around or encompassing the stumps... pretty...
Or plant a nice native vine like passionflower, cypress vine, Coral Red honeysuckle (Lonicera sempervirens)... to cover the stump...
Those stumps can add value to the landscape... those stump grinders never do.
