If one purchases a new pair of Tefilin should he say Shechiyanu when he puts them on the first time? When is the Bracha said for those that say 2 Brachos, after the first Bracha of L'haniach Tefilin or after the second Bracha of Al Mitzvas Tefilin (before or after Baruch Shem)?
As stated here and here this is a Machlokes. The Mishna Brurah paskens that you should say Shehechianu on something else to avoid the doubt, but to find a way to say the Bracha (apparently not when actually wearing the Tefillin).
Here it says that you could wear a new garment if you normally make a Shehechiyanu on it, at which point you make the Bracha after both Brochos. The source footnote isn't available in the Google preview.