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Thanks. Unfortunately I've already moved once with noise as the priority and it didn't work out. About the silicon ones, were they the ones which are custom made?
I'm guessing it's something similar to these, they come in different brand names depending on which country you're in and I can highly recommend them, having tried many different earplugs myself. Much more effective than the foam types and almost as cheap: https://www.amazon.com/Macks-Pillow-Soft-Silicone-Earplugs/d...
https://www.amazon.com/gp/product/B0051U7W32
I don't like using them full size because they tend to make my ear sore when worn for long periods, so I cut about 1/4" off the smaller end. I wash mine when I take a shower, so this bottle of 50 pairs has lasted nearly 10 years.
I have tinnitus caused by working in a computer room with loud blowers, and wearing ear plugs most of the time helps a lot. Good luck!