OK, I've been accumulating some new ones. Got a 221k then a 222k, a Necchi Supernova, two 201ks and a model 66 in the past month or so. I've sold a few to make some room, but mostly just re-organised the shed so more will fit (I think I'm getting away with it. No, really). The supernova is said to be a potential time sink, so it's going to have to wait until the school holidays when I'll have a little more time to get caught up.
I think I've fallen for the 201s. Absolutely brilliant, smooth machines they are. Alex Askaroff said the earlier ones have the edge purely because of their massive weight (they can sew faster or some such insanity). The stitch is amazing and fuss-free. I'm going to try out sewing through several layers of denim, just to be convinced it can do it.
Here's a small assortment of new ones: