I’ve a Hexus 2 that’s around 5 years old, and I’ve just bought the Hexus X as I broke the chain pin in the Hexus 2.
My Hexus 2 did go rusty, but it mostly cleaned up OK. I only bought the Hexus X as it would cost £6 for a replacement chain pin, and CRC had the Hexus X for £13. As the Hexus 2 is a little rusty I thought I’d try the newer version.
The Hexus 2 has longer allen keys, and the chassis feels a little more solid, whereas the Hexus X feels a bit cheaper and more plasticy. In use, besides the length of the allen keys they’re very similar. For a multi tool I’d be happy with either really, but if they were the same price I’d go for the Hexus 2.
The tools themselves feel good on both models, and the chain breakers are well regarded. I’d put me breaking the pin on the Hexus 2 down to user error.