I finally decided to buy a microphone, as my current rig consists of a HiMd with some headpones and I better start upgrading

I noticed sound professionals does have some nice overstock deals at the moment and I wanted some advice about these mics
SP-CMC-19 (standard)
from 199$ to $59.00
http://www.soundprofessionals.com/cgi-bin/gold/item/SP-CMC-19Specifications:
* Signal To Noise Ratio: >58 dB, 1 kHz at 1 Pa
* Dynamic Range: 76dB without battery module, 91dB with battery module
* Frequency Response: 80 - 18,000 Hz
* Open Circuit Sensitivity: -51 dB (5.6 mV) re 1V at 1 Pa
* Maximum Input Sound Level: 105 dB SPL, 1 kHz at 1% T.H.D. (120dB when powered by our battery module)
Features:
* Wide frequency response
* Uni-directional cardioid pickup pattern
* Very small size
* Can be used directly with any recorder that has "plug-in-power" or with a battery module
* Premium windscreens included (not shown)
* Available in a Omnidirectional version - order SP-BMC-2 model instead
SP-CMC-20 (deluxe)
from 179$ to 59$
http://www.soundprofessionals.com/cgi-bin/gold/item/SP-CMC-20Specifications:
* Signal To Noise Ratio: >58 dB, 1 kHz at 1 Pa
* Dynamic Range: 76dB without battery module, 91dB with battery module
* Frequency Response: 50 - 20,000 Hz
* Open Circuit Sensitivity: -45 dB (5.6 mV) re 1V at 1 Pa
* Maximum Input Sound Level: 105 dB SPL, 1 kHz at 1% T.H.D. (120dB when powered by our battery module)
Features:
* Wide frequency response
* Uni-directional cardioid pickup pattern
* Small size
* Can be used directly with any recorder that has "plug-in-power" or with a battery module
* Premium windscreens included
SP-CMC-22 (deluxe)
from 129$ to 69$
http://www.soundprofessionals.com/cgi-bin/gold/item/SP-CMC-22Specifications:
* Signal To Noise Ratio: >58 dB, 1 kHz at 1 Pa
* Dynamic Range: 76dB without battery module, 91dB with battery module
* Frequency Response: 40 - 20,000 Hz
* Open Circuit Sensitivity: -40 dB (5.6 mV) re 1V at 1 Pa
* Maximum Input Sound Level: 105 dB SPL, 1 kHz at 1% T.H.D. (120dB when powered by our battery module)
Features:
* Wide frequency response
* Uni-directional Cardioid pickup pattern
* Small size
* Can be used directly with any recorder that has "plug-in-power" or with a battery module
* Premium windscreens included
The difference between the mics are the frequency range and open circuit sensitivity (what??).
My first idea/though was going for the cmc-19, which original was the most expensive (yeah i am dutch

), but then I noticed the worst freq. range (but possible best open circuit sensitivity?)
The cmc-20 then?? Well yes, looks good, but doesn't come with clips and only has the shure rotational clips as option which are 30$ (will need clips as I will be sealthing mainly).
so the cmc-22? best freq range and with clips, but original the cheapest (and worst open circuit sensitivity??). This one has option to chose between 3/4" and 1" mic size .. my choise would be 3/4"
I realized, currently I am mostly taping in HiSP mode, which might have cut-off at 18 kHz (not sure), but i might switch to wav in the future..
So what should i buy? Is the 18 vs 20 kHz difference big? what is open circuit sensitivity and is it important (or should I put more importance in freq. range?)? What is standard vs deluxe (mic element is all the same i guess?)
Or should i go for something else?? i will be taping rock/bassy shows mainly from the crowd (and like to be close to stage..)
Note:
A comparable priced mic commonly used in europe is the sony ecm 719
has freq range from 100-15,000 Hz!
I know the post is a bit a mess 