Already ordered grey/stainless steel - has a magnet like a gorilla. Love it. So I ordered the V4 grey/stainless steel. It was a lot cheaper and I understood why - the magnet is much weaker. There isn't much confidence in its use. I will order more grey/stainless steel because I need good support. As for the gray V4, it will likely find its place in the trash can. I would not recommend that. Update: Ordered another grey/stainless steel - and got another great magnet. My guess about the V4's gray color seems correct. The magnet was weak. I recommend a more expensive but much better option.
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