I have one from Rillington lines, great little bitch, works any cover. She retreives naturaly having never been taught, loves retreiving from water.
I only use her for rabbiting.
She is quite sensible and bright for a terrier but when on a scent she sometimes looses the ability to hear me.
I think they have the best nose of any terrier but definately not the best coat.
Good little dogs to have around, i would get another.
Shepp