Their 8th Dr was good. War Doctor was excellent. 13th look excellent, although only from pics because why would I want that any part of that disastrous era of the show? Finally their 3rd Doctor was absolutely gorgeous with a likeness 50 times better than anything they've done.
I think the 9-12 definitives will look pretty good when all is said and done, as will the definitive 4th which is just around the corner now. Could we be wrong of course.
I do still think the new 9 and 10 look off, but I think they have that uncanny look because they're closer to reality than other sculpts so they look a bit strange to our eyes. If I was BCS I would continue to work on both of those because they won't be tooling for ages and they could get so close that we'd all be much happier. To sit on them a good year before production begins would be awfully lazy. 11 and 12 look pretty damn amazing from their previews though.