Yesterday, Apple Inc. (Nasdaq: AAPL) showed off its new iPhone X and iPhone 8 – and upgrades to the Apple Watch and Apple TV.

And today many of you are asking where to invest now. Buying Apple itself is the best way to play this annual September event, of course, and then your next best bet are the suppliers. We’re talking about the chipmakers and other small tech firms that are making brand-new iPhone functions like facial recognition and OLED screens possible.

While Apple’s new devices add up to a big winner for just about all of the Silicon Valley legend’s supply chain, that doesn’t mean you should “Buy” all of them. Some are long-term investments… some you should “sell the news” on now… and others you should just plain avoid. Here’s what you need to know…