So, several recommendations here. What should I look at, for my purpose, on the spec sheets? I think the important things are
* Low self-noise level
* Not too much difference in noise levels between A-weighted and CCIR-weighted measurements. (i.e. not too much noise around 6 kHz)
* Flat frequency response
Am I forgetting about another parameter? And is it safe to think that transients etc. are always sounding OK when using condensers?
I checked the spec sheets of the HAUN 410, and the AT4022. (And the AT3032.) The thing here is: both state to have a noise floor LOWER than the DPA 4006TL (which has a noise floor around 15 dB. I think I am misinterpreting some information here.

(Or is the 4006TL really noisier than these chaps?)
One thing the AT's have against them is probably the frequency response becoming quite wobbly above 1,5 kHz.
The Haun 410 doesn't have a frequency response graph in the specsheet at all. If someone could find one, I'd be interested.
How noisy are the Oktava's? I can't find this information on an Oktava site. (Also, it is not always clear whether someone is talking about the Chinese oktava's or the Russian ones.)
The Avenson STO-2 is an micro-diaphragm electret-microphone, am I wrong? They might sound fabulous, but I'm not sure whether their noise level allows them to be used on distant recordings of enormous dynamic ranges. Although they might be worth trying, I'd like to stick with the condensers for now.
The NT55 are looking very nice, with 15 dB noise level, but I'm somewhat worried about the enormous high frequency boost at the higher frequencies. (According to the graph, it's like 8 dB more sensitive on higher frequencies...)
Opinions / feedback?