I have the fully manual model, one side at a time. It works amazingly well. If I encounter a very dirty LP or one with embedded grime, I'll use my spin clean first, then a distilled water rinse with the Record Doctor. The appeal of my setup is that it's the lowest price to do the most/best work. If I'm going to spend more I'd probably be looking at ultrasonic, perhaps the Kirmuss unit.
This unit moves into a crowded space of vacuum-based cleaners. I wish them luck, as I am a huge fan of my model.