Is the Dremel 8250 worth the price premium over the 8240?

The 8250 adds a brushless motor, which protoolreviews.com measured at roughly twice the runtime of the older 8220 when cutting lag bolts. r/Dremel and r/Tools threads consider the brushless motor and longer tool life the main reasons to pay extra; if budget is tight, the 8240 covers the same core use cases at a lower price.