Great question — answering as the UphillTech team:
Either should be fine providing you use them in the correct context. Their jobs are to provide extra grip in minimal winter conditions. If there are patches of ice and your hiking on easy ground. If you intend on going on steep terrain and/or full winter (compacted snow, etc) then you will need at least a C1 level Crampon and B1 Boot system. Snow spikes are not an adequete replacement for a proper Crampon, ice axe system and the knowledge to use them correctly.
Full answer by user2766: https://outdoors.stackexchange.com/a/14511 (CC BY-SA 3.0).
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