It is a big step up from the only other X I've spent any real time with (my 2016 which was a complete pile). Feels a lot better put together in general, most of the quibbles I had with the older one (range, non-folding second row, crap infotainment) are fixed. It's not really a complete revolution but given how much earlier Xs are now selling for I think it's a worthwhile upgrade if you can get good money for your 2017.