For keeper collections, the majority of people want THE best possible. 9.8s are usually it. As previously stated, abundance dictates this line of thinking. I'd even go as far as copper with this, unless its one of those cost prohibitive copper keys where a 9.8 copy costs 300% more than a 9.6.
For resale, there is no question one would be disappointed because there literally is almost no market for 9.6 moderns unless its scarce/rare/low print run books. You might as well crack it, read it once and sell it raw for $2.99.