I don't run my A/C on max. Always low at 70-71 since my apartment is not that big. Is running it on low matter? or make a difference? or just having it on is heavy use?

https://www.amazon.com/EP-Outdoor-Extension-Cord-Appliances/dp/B09QQ48W1L/ref=sr_1_5?crid=ZZJTV5SPKDZT&keywords=12%2Bgauge%2Bextension%2Bcord%2B3ft&qid=1681608234&sprefix=12%2Bgauge%2Bextension%2Bcord%2B3ft%2Caps%2C70&sr=8-5&th=1

OR

https://www.amazon.com/gp/product/B09SHHT23M/ref=ox_sc_act_title_1?smid=AEJVQ9PAIFYJT&th=1

Honest opinion which one should I get? someone said that the 10 Gauge is safest and won't have to worry about overheating