30 amp extension cord recommendations

Got mine on Amazon. I have a 50a 25' cable that came with the trailer, so I have a 50a-30a adapter, a 30a 50' extension cable and a 30a-15a adapter for the occasion when I need to plug in at home. Amazon had the best price on all these items and I figured it was better to be prepared than be screwed. I once showed up to a park where the water and electric was along a fence 40' from the actual campsite and I couldn't reach with what I had available, so I stocked up in case it happened again or for when I needed to park in friend/family's driveways.

Everything except the original 50a cable is Camco brand.