I have one his keen as hell. Great nose and bright dog too. His a good ferreting buddy and pulls off some great catches on the lamp.
Down sides I have struggled with sheep but will get there, he was possessive but getting much better, plonker around other dogs but going great there now.
He don't retrieve as of yet.
In fairness all the down sides are more than likely my fault and I like him a lot His litter mates are all working well as far as I know