Call me short sighted Villette, but
I bought the gold 20mm.... Cause my Pixie had shorter hair and a thinner coat.... I did not even think for a second that she would mature and need a heavier brush! lol

Needless to say, I love it! And would you beleive.. I have caught my daughter using it at least half a dozzen times!!! She said that its much nicer than any of her brushes! (How bad is that? The dogs brushes are better...)
Looks like I will be buying a second one! oh darn!

Maybe I can hand the 20mm down to my human child and the Yorkie children can have the new 27mm! I'm a Terrible mother, I know!
Which slicker?? I need one!
The buttercomb
I have and LOVE LOVE LOVE! is the #012 $20 its 4 1/2 inches long and teeth spaced 11 per inch. Its awesome!!! It pulls right through the facial hair and breaks up the eye boogies! Its also nice for checking for mats on the legs... Its a great comb for a smaller Yorkie or for face work.
For a Tea Pot Yorkie! I might go with the #001, same comb almost just longer, with slightly shorter teeth and same teeth spacing, 7 1/2 inches long $24
Anyway... thats my CC brush 2 cents