Very useful overall, but difficult to use since the Massorah and Apparatus modules etc. are separated for each volume. It will be much easier to use if the various Massorah and Apparatus volumes are combined into one volume of flowing text each, similar to the main text.
The various volumes also differ in how references to the Massorah are displayed. Compare below:
As you can see above, in some books the words or phrases are frequently marked with ⌜signs.⌝ In other books it only uses the superliner circules.
Furthermore is sometimes difficult to really know which Masoretic note is connected to which word, since notes from multiple verses are sometimes merged into one string of notes:
As you can see above, it is difficult to know which notes belong to which verse, as the notes from three verses are all merged into one. It can be figured out of course, by carefully reading the text and working through the notes one at a time, but for a quick lookup this can be quite frustrating. It might be helpful to have access to a photographic reproduction of these pages as with some other resources in Logos.
There is no morphology, but the text is virtually the same as BHS, so use BHS with morphology for that purpose.
Finally, the Apparatus and Textual commentary are a bit basic - they lack information and discussions on many important points - e.g. הלהן in Ruth 1:13.
Nevertheless, a very good resource overall.