I have two same-model racquets, one 4-1/4 and one 4-3/8. I like the 4-3/8 size just right with a leather grip and Tournagrip hi-tack over it. I'm experimenting to get the 4-1/4 up to the same thickness. I've got a 1/2-size heat-shrink sleeve and leather grip right now, and I'm considering Yonex super grap overgrip. Feels to me so far that the super grap is a bit thicker than the tournagrip. Overall I really like the feeling of tournagrip and want something of comparable feel. Anyone else have thoughts on it, or suggestions?