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Picking extended warranty often boils down to one's DIY technical skills. And, the realization that if an item is fixed, they fix "as is" - never making it better than factory.
For my Trailers (RV, boat, utility), I NEVER buy extended warranty. If something breaks, I fix it. And, I fix it better than factory minimum build. If factory build broke the first time, odds are it will break again. Thus, one should always fix "better than factory" - when something needs to be fixed. Many warranty programs only fix "as is". And, they often won't pay for collateral damage as well. For example, they put caulking around a leaky window but they won't fix the rotter out lower wall and rotten out floor (below the leaky window). Fixing rotten out areas is your cost.
I'm a firm believe in preventative maintenance as well. For example, take saved dollars from NO extended warranty and use saved money to buy High Quality Surge Protection. High Quality Surge protection means proactive protection for all internal electronics.
For my many trailers, I don't buy extended warranties. Only included base warranty. And if something needs fixing, I fix it myself - much better than factory.