Ive had some experience with the cheapies. In watch repair, I noticed we put everything into little cups or beakers and not directly into the cleaning tub. The cheaper cleaners dont have enough strength to give good enough bubbles through the glass. I am able to clean jewelery like rings and necklaces because i put them directly in the tank. They do an ok job but I still end up using a tothbrush to get in the cracks. I would recommend getting a quality cleaner. I got mine on Ebay for about 85.00 US Dollars and its done a great job.