The choice between the feet warmers and the thick socks would all depend on the preferences of the consumer. Particular consumers would naturally have cold feet and therefore using a thick pair of warm socks would not make much of a difference in such a case.
Whatever the case, you would need one of the best foot warmers to help you survive the cold times of the year more so during winter. A good pair might just save the day. Subsequently, it is important that you try out different designs of this product in order to arrive at the best quality for you.