I would definitely look into a bucket wheel. Both of the wheels you mentioned are pretty tough to clean completely, with the cracks & ridges. And like Cashmere said, the Silent Spinner also isn't safe. Bucket wheels are much safer & much easier to clean too. Most of them are made on a frame to where you can adjust the tilt by twisting the PVC legs. If you're in the US, LarryT's Carolina Storm Wheels and Bucket Wheels are very popular and well worth the money.