The two are on the same level, almost identical in the nose. If necessary, I would prefer the Oloroso a little, since the aniseed note of the 2019 was almost too much for me. If you do not drink them in parallel, that hardly matters, and the similarities are too strong. But wait, I have never had such spice-intensive malts. One always thinks at Christmas sweet cookies with Christmas spices, sweet mulled wine with Christmas spices, sweet gingerbread with Christmas spices ... with these two here you have whisky with Christmas spices, without all the sweets. I think a shot of it in the tea and it tastes like Christmas
the 2018er has an extremely Gewürzlastige nose, restrained sweetness, many spices, cloves, pepper, but also anise, almost too many spices, the fruity counterpart is missing a bit, maybe some orange peel. In addition hints of smoke. Over time, the nose becomes a little sweeter, denser, the spices are not so over all, but are still extremely present.
Normally you should now write about differences, with such a comparison, but I find the nose of the 2019er extremely similar, almost identical. The same, intense spices, the same orange peel, every time I think I've found a darker sweet note, I find these at 2018er synonymous. So I have to say, from the nose I do not notice the difference between Oloroso and PX, which is probably because the basic distillate before the finish is very similar and these extremely intense spice notes are just too dominant. Subjectively, the Oloroso is a little "brighter", but that can be deceptive.
The 2018 has a nice crisp start, immediately attacked the spices, you literally bite into the Glühweingewürzsäckchen. The clove brings warmth and sharpness, in the background again orange peel, some wood and all in all very dense aromatic and tend to be rather dry.
The 2019er is not quite so dry, first a small sweet note, but then here is the spice attack, but it is a little more mulled wine than Gewürzssäckchen. Incredibly massive star anise note. Overall, I think the 2019 also hotter, sharper in the mouth.
The 2018 remains slightly astringent, still plenty of spices, a slight tart notes, but tends to bitterness, which is surprising given the spice load.
The 2019 stunned a bit first by the alcohol and the flavors, slightly occupied palate. Then here certainly noticeable Sherrynoten, in addition to the many spices. Sniffed again on 2019, the anise note is more present than in Oloroso.