If you make a copy, jewelry can choose to turn the income attribute into quickness, proficiency, crit and so on, which means you can make up for it according to your own shortcomings. The current version of ordinary jewelry is only blue, so I expect there will be purple gems in the future update.
The benefits of forging are similar to those of jewelry. You can optionally add 80 more attributes, but forging has another advantage for soldiers, that is, you can make your own equipment. Of course, it is cheaper to do it yourself than to buy it outside, but your skill cost is also high. Moreover, it is not cheaper than a few kilograms. For CTM, a few kilograms is nothing, especially 4. 1 is coming, and forged things will soon become street goods. So forging is not recommended.
Engineering helmet and engineering enchantment are all good now. The exclusive equipment of engineering head (something similar to engineering exclusive jewelry) goes against the sky, and one equipment adds 208 additional attributes (speed, crit, hit, proficiency, toughness, etc.). ). Engineering enchantment can also play a great role in many boss, and it is a good major. The only drawback is that punching skills costs too much money, and you won't make money when it's full!
Enchanting is also an income of 80 attributes, and it costs a lot of money to rush skill points. Moreover, the current version of amethyst is 1000-2000G, which most people can't afford, and enchantment is not very profitable. However, after the opening of 4. 1ZAM and ZG, the price of materials will be reduced, and then the enchantment will usher in a golden age.
To sum up: the income of any major in the current version is the same. Considering practicality and cost performance, jewelry and engineering are recommended. Think about long-term goals and making money, or enchantment and jewelry.