My pick would have to be the A Whole Nother Story trilogy, in which (spoiler warning) you can only travel back in time. But because time is in a loop of sorts, if you go before the beginning of time, you will be at the end of time. From there you can go back to any time you want to. And time paradoxes cannot be produced. Plus, your memories from the previous timeline exist as well as the memories from the new one.
Time War is incredible. But it’s not trying to do anything special with the time travel. Chiang uses his breezy prose to deeply analyze the philosophy and scientific implications of his time travel premise, and it’s jaw dropping.
I agree. The draw of the book isn’t doing anything new with time travel itself but rather evoking metaphors and love with varying realities.
But the writing was so, so good.