Hi can anyone help me choose a new comost bin, as one of mine needs replacing. I have 1 standard bin, 1 tumbler(which I think I overfill so is difficult to turn). I also have 2 plastic dustbins, which I have turned upside down, cut the bottoms out, the lid sits over the cut out. I have been wondering about the hotbins, does anyone have one ? Also there is one by "environs" I believe, which is a tumbler that rotates on its base. Any tips or reccomentations please ???.