If you're looking for a high-quality, durable differential, the Truetrac is a great option. Its unique design uses cone clutches instead of traditional friction plates, so it's much less likely to wear out over time. Plus, it's significantly cheaper than other comparable diffs on the market.
One downside of the Truetrac, however, is that its cones can chatter when turning at low speeds. This can be annoying and may even damage your tires if it happens frequently. If you do a lot of low-speed driving, you may want to consider another type of differential.