You're very welcome! As the days roll onwards, you'll most likely get a ton more suggestions from other users that have direct experience with a bunch of other microphones. My mic locker is growing, but it's not vast. Yet
I bought two of the C414 XLS (and
Shure SM81, and Fathead ribbons, and SM57) because I tend to record a variety of instruments in my home studio. Sometimes, a stereo mic setup is preferable for things like drum overheads, acoustic guitar, ensemble vocals, or whatever. Or sometimes just a dual mic setup is nice, even if it's not in stereo. Picking up different characteristics of a voice or instruments based on mic placement, then combining them. There are all sorts of fun things to do with a matched pair of microphones.
If you like the Lewitt LCT 440, you might also check out the
Rode NT1 and NT1A. I think that the LCT 440 is a direct competitor to the NT1A, but I don't have direct experience with any of Rode's mics. But they're hugely popular for a reason, I'd bet. Great customer service, from what I understand.
There are some other up and coming brands like Roswell (check out their Mini K47), Warm Audio (their WA-87 gets rave reviews, and is a U87 "clone"), Mojave Audio, Aston, and JZ. All of those brands make at least 1 mic in the $600-ish price range and have very good reputations for solid performance