“Looks like the usual adage of “Get your Mac laptop with the best ram/processor/storage you can afford” is once again viable advice.”
While the jury is still out on whether or not this firmware update will actually fix what is a terrible physical chassis design, one thing remains true: DON’T buy you ram or internal storage from apple. They charge a ridiculous markup for it. Buy the fastest CPU machine you can, with the minimum ram and storage configuration, then buy your ram and ssd from a third party vendor such as OWC. You’ll save a ton of money.