I've been reloading for 40 years.
Some Lee products are great, perform well and hold up to the test of time. The Lee Loader is an excellent example. Many other products, though, rely heavily on cheap aluminum or zamac parts that quickly wear out or break. You have to do your research.
The aforementioned Lee Loader is a great way to get into reloading. They are very affordable. It is slow and deliberate, and makes you learn the fundamentals. Even if you later buy a press, you'll probably keep the Lee Loader for it's practicality and portability. Pair it with the Lee powder scoop set to expand your loading options.
Dillon equipment is the gold standard in terms of quality and service. Their equipment is an investment. Should you choose to sell it one day, you'll recoup most, if not all, of your initial investment. And, their customer service is friendly and knowledgeable. They stand bhind their products.
You can't say that for Lee.
Also, Lee customer service is terrible. They can be very snarky to their customers. If something breaks the best you can hope for is a partial discount on a replacement, if you pay to ship the broken item back to Lee. Resale value on most Lee items is practically nill.
And, there's one more subjective issue. Lee outsources a lot of production to China. To me, that's a big problem.
Dillon, with a few exceptions, produces everything themselves. They don't make electronic components. And, their carbide die parts are outsourced. At least they are domestic production, as this quote atests:
"Customers with existing carbide die backorders, we have not forgotten about you! Die orders are filled based on the date they were placed, oldest orders first. Because we refuse to shift carbide production to China, we have been slower to get caught up on demand. However, the dates shown for newly placed orders do reflect that our carbide suppliers are steadily increasing output, without compromising the quality everyone expects from Dillon Precision. We appreciate your patience and your loyalty to Dillon Precision. "