The Good: Featherweight
Simple and serviceable
That unmistakable Hugi sound
The Bad: Slow engagement
I have been on DT 240s for over 10 years. In those 10 years the only service that has been required is a simple regrease of the internals every year or so, depending on mileage, which requires no specialized tools. In my opinion, these hubs are the gold standard for reliability, serviceability, and weight. The new ones are especially great as the interchangeable end caps allow you to run 9/15/20mm in the front or 135x10 or 142x12 in the back. Gotta love that!
The engagement is a little slow by today's standards but I guess I don't mind it because I have never been left wanting for quicker engagement. Yes, they are spendy but if you want the best, it comes at a price.
Save your pennies, buy 240s and never buy another hubset again.