Yes I agree with you on never to depend on one light. Guess what I meant was that if you are to get 2+ lights, make at least one of them a very good bright one. IOW it would be absurd to be equipped with 5 weak lights none of which is visible from distance.
Re return policy, it's only practical within the country. For most of them you would have to send it back to China, Hong Kong, etc., not worth the shipping cost unless the item is >$100, plus the waiting time. (I'm still waiting for one of my orders, Hopefully it will arrive before I forget it and orders something else
)
The lights that I have referenced and the ones that I use
are very bright ones. I wouldn't suggest any other kind of light. These lights are cheap but they aren't dim. At $40, they are well within the cost of the "be seen" (but not really) lights that many people use but they have a far greater output then those lights do.
On return policy, I
always check the returns policy and country of origin before I buy. I suggest buying from a US supplier so that returns, if needed, are easier.