Tom, what more can I add, three delightful and stunning pieces, very difficult to say any one of them is the best, each has it's own character and merit, but above all it's having the whole tree .. opens a whole new realm of possibilities in form and figure, you can cut or orientate for the best grain, then a piece can still yield surprises during turning.
The narrow winner has to be the ... Olive .. and the Walnut just pips the Sweet Chestnut, then that's just me.
It's always nice to see WIP, it documents so much of interest and reference. You've had the Olive for sometime now, as I'm sure I'd seen a past post a year or so ago on you having to clear them from a garden, following their death from the years of relentless cold winters, the loss of some beautiful trees, but gain in timber.
Cheers David