Is a brushless cordless jigsaw worth the extra money?

Generally yes, according to expert sources like protoolreviews.com and platform-specific subreddits. Brushless motors deliver higher no-load stroke speeds (often 3,000–3,200 SPM versus 2,500 on brushed), better runtime per charge, and smoother cuts in thicker hardwood. The brushed Craftsman V20 and DeWalt DCS331B still get strong reviews for occasional DIY use, so brushless is the upgrade pick for frequent users, not a must-have for casual jobs.