I don't worry about what I buy cause I know I can sell it whenever I want if I price it fairly.
I've been in the hobby for seventeen years and have grown tired of every game I've owned over time. Some games stayed six months, some five years. I've only had 1 - 3 games at a time.
WPT stayed five years and I enjoyed it even when it was unloved by a lot of people. I'm glad you like yours.
Buy what you want (try not to overpay too much) then sell when you want (and likely make most of your money back) and don't worry about things.
Good luck and have fun. Unless you have a hoarder mentality, it's pretty easy to buy/sell games so you can try out different ones and not run out of space or money.