Flip, I think the most important question here is, what does your son currently enjoy?? Being new or not really knowing is a valid answer, too. So much variety that you could give him the most expensive Islay scotch on the market and he'll hate it if he doesn't care for that style.
last couple of bottles I've given to him and
my daughters husband, they all enjoyed. but I am note sure
if Seth is still at Shoppers vineyard(he used to recommend good scotch).
One bottle was Monkey Shoulder, others were a Johnie Walker sampler,
he does like the platinum and the blue.