First of all, I'm a noob in sound engineering. I wanted to get a pickup for my acoustic guitar, but hated the sound of any that I checked. Thus I decided to go for the instrumental mic, and LCT040 are perfect for what I needed.
The sound sounds.... pro! :) It records so many details in so much clarity. The noise is almost inexistent. I'm able to get a very loud signal with no noticeable hum or noise. I guess that people that are used to $3000 mics would disagree, but for me these mics give me perfect sound. They are also inspiring for someone like me, who has never mic'd the guitar before, but used the mid-tier pickups. I noticed I started playing and recording myself more since I got them.
It's also worth mentioning that I've recorded my 6yo daughter with these mics, and the sound was perfect (maybe also due to the lack of bass in her voice).
Weird things also happen with these mics. Once I turned gain a lot (but not to the max), and was able to hear and recognize some words from someone talking two backyards away, whom I couldn't hear by ear :)