Very good review, especially concerning the description of the sound, in a way that we can all imagine how the LAND sound. In the same sense, the comparative comments between cables and the other models, are concise and appropriate, without extending more than necessary and only commenting on what really differentiates them. I like it. And I can also tell how much you enjoyed writing this review, without detracting from the work and effort required, of course.
Headphone Reviews and Discussion - Head-Fi.org
To my taste Land is the most interesting IEM ever listened under 800$ And very very close to IT07 performances with a slightly different tuning.
Today my favorites are Mest Mk2, IT07 and Land, but Spark would be and endgamer with different tuning than
Mest Mk2, I bet would be more energetic and more oriented on highs than Mest Mk2 that is my most enjoyable IEM for long session.
Having listened Tansio Mirai EST tuning I think Spark could play in the same QDC V14 league.