I sold my TLM 103, it was way too bright for my voice, my AKG Perception 220 sounded better for my voice. I bought a Neumann 416, great microphone for certain genres but it's too, "In your Face" for long form narrations for voice over. Then I bought the Austrian Audio OC18 for $800 after researching all the information I could find. The OC18 is unbelievable! I have talked to sound engineers live and told them I was speaking through a U87, they were blown away when I told them it was an OC18!
The top end on the TLM is freaking harsh. I had one and sold it. It was a beautiful built mic but that top was shrill. The OC18 or 818 has a better frequency response with that 7k dip IMO.
Not a big fan of TLM103 although it is a good microphone, but this OC818 has some harmonics that I do not like. It is more natural in the higher frequencies, but not so much in this 2 to 6 khz region where those harmonics occur.
That's a lot of uncontrolled low end in the OC818. Almost makes it unusable in close proximity. The OC818 sounds nothing like natural. Damn people are deaf...