Any time you see words like "future proof" you can expect to pay a lot of money and receive a lot of disappointments as it will not live up to the claim. People love to buy AMD CPUs for the same thoughts, yet unless you plan on replacing the CPU within a 2-3 year period of time, you'll find out that the newest features available, along with the costs to buy an outdated item makes it an unwise move.
How do you future proof against additional frequencies or bandwaves being added? The unit won't be able to use them, and even if it had some major tweak it would never work as well as a unit specifically made for those changes.