Beetroot and baby beets

I love the baby beets just boiled or roasted as a veg and OH likes them pickled or just doused in vinegar.   As they get bigger I sometimes add a sauce, probably horseradish or a sweet one like in Harvard Beets.

I'm looking for recommendations from all of you as to your favourite way of preparing beetroot.
I expect we should eventually have a similar thread for courgette recipes when the glut comes

Mods if this should go under the relevant veg type  please move