Does anyone have recommendations for a reliable, over-the-counter Pulse Oximeter?

I was diagnosed with mild bronchiectasis last year. As everyone can relate, this diagnosis has made the pandemic especially difficult. I've been extremely careful about any exposures to Covid. However, in these challenging times, my pulmonologist recommended getting a Pulse Oximeter.

I've seen brand names such as Zacurate Pro Series, Oxiline, Insignia, Choicemed and AccuMed. I would appreciate recommendations from anyone who has purchased a Pulse Oximeter. Which brand do you use? How accurate? How easy to use? What was the price? Thank you!