There are many purchases in life over which I vacillate.

Floor pumps would not be one of them. In cases like this, I tend to the following general guideline:

"Go to a reputable retailer that sells a sufficient variety of the item. Do not buy the cheapest one. Do not buy the most expensive one. Don't spend more than 5 minutes comparing features."

In this case such a retailer might be Dicks, REI, or an LBS. Probably not Walmart or Ace hardware.
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