Zwartbles - spectacularly quiet, tall, elegant and pretty sheep that are easily tamed and taste phenomenal. My lambs make 20kg lean carcasses at 5 months old that have tons of taste and don't dry out when cooking. You could either keep them pure or put a commercial tup over them for chunkier lambs. Easy lambing (none of mine have needed assistance the last 2 years) and mostly excellent feet (although you do have to be fussy about where they come from - some of my original stock had feet issues and were culled out for it). They do need plenty of grub though.
They are indeed, very tame, friendly sheep, and the flavour is extraordinarily good - not *quite* in the same league as Shetland etc, but noticeably better than 'regular' lamb. And they are big enough to be away the same year, or most of them, which you would probably want with bigger sheep and a slight question mark over feet.
It was Zwartbles here when I came with my lot. We've culled for problems and now have just one Zwartbles left - but she's a fab sheep. I'd have more like her
The problems have included not allowing lambs to suckle (first time mum), difficult births (one strain), bad feet (most of 'em), propensity to get fly struck (one strain), propensity to triplets and not able to rear them.
We had in any case decided to cross them and bring the size down a little. Their frame is so large, it is hard for us smaller folk (all three women who share the sheep care here!) to tip them over. They are quiet enough to do feet like you would a horse, but you do still sometimes need your sheep on her bottom.
And as a dairy breed, on our ground at any rate, their need for additional feed is quite high. It goes into the milk, which goes into the lambs, which grow really well - but it is something you have to watch before and after lambing, or you can end up with ewes losing too much condition and being unable to recover in time for tupping next year.