To add to the mix, I like the 4061s and I've made some nice recordings with them. Are they 5x better than a comparable CA mic? Well, hard to say. The one comp I've heard of 4060s vs the very inexpensive ($89) CA-1 mic by Chris was pretty close, although the source material was a jazz trio with limited instrumentation, not a super loud rock band, which is what a lot of people using these mics are recording. But keep mind, too, these are omni mics; your original question was about cardiod mics.
I paid $650 for my 4061s used. I didn't think that was a terrible price, and I'm a sucker for the DPA name, I'll admit. But at the time, I was also not familiar with the other higher-end small omnis, such as the Countryman B3 and Nevaton MCE400. The Countrymans cost like $300/pr and the Nevatons can be had for a bit more. the Countrymans don't seem to be that popular even though everyone who has them swears by them; they also need to be terminated in a stereo miniplug by somebody for you (if you don't know how to do it). The Nevatons by all accounts sound awesome, but the fact that they use XLR connectors kind of kills it for me, as that makes them way less stealthy IMHO.
If I were buying again, I'd probably ask a lot more questions about the Countryman B3 and if I could get one of the many capable guys here to terminate it in a miniplug for me, I'd probably go with that.
The Denecke PS/2 is the smallest phantom power supply that can take fullsize XLR inputs that I am aware of. It's just power, not a preamp, so you have to use the recorder's gain. I rarely use it unless I am stealthing, which I don't do much. That power supply is not really relevant to the mic types you're asking about.