If you want to get the best gear in Guild Wars 2, while avoiding the gear treadmill, you should look into getting exotic gear, ascended gear, and legendary gear. Exotic gear is the easiest to get and it is pretty good, with stats that are slightly better than those of exotic gear. You can buy exotic gear on the trading posts with Guild Wars 2 Gold. Ascended gear has the highest stats in the game and it is not available on the trading posts, so you need to go on a journey to get it. Finally, legendary gear has the same stats as ascended gear but it also has some added quality-of-life features. 

Firstly, it's important to note that gear is not a major concern while you're leveling. But once you reach level 80, you should focus on getting better gear to prepare for higher-level content.

The first type of gear you can aim for is exotic gear. Exotic gear can be bought on the trading post and has stats that are slightly better than rare gear. It's the easiest to obtain and is a good starting point for players.

The next type of gear is Ascended gear. Ascended gear has the highest stats in the game but is not available on the trading post. You can acquire ascended gear through crafting, Raids, and Strike Missions. It's important to note that ascended gear comes with preset stats, but you can change them using Mystic Forge.

Crafting is one way to get Ascended gear, but it can be expensive and time-consuming. You'll need a crafting discipline at level 500, and you'll have to gather all the necessary materials. If you choose to go down this path, it's recommended to use a crafting guide to help you.

Another way to acquire Ascended gear is through Raids and Strike Missions. These activities drop various currencies that you can use to buy ascended weapons and armor. Doing group content can also be a great way to earn these currencies faster.

Finally, legendary gear has the same stats as ascended gear but comes with additional quality-of-life features. You can acquire legendary gear by completing a collection of items, which includes ascended gear and other rare items.

In conclusion, getting the best gear in Guild Wars 2 takes time and effort, but it's worth it in the end. Exotic gear is a good starting point, but as you progress, you'll want to aim for ascended gear and even legendary gear. Crafting, group content, and collections are all viable ways to acquire this gear. Good luck on your journey and happy gaming!