There is great work being done in the "Mega Mini Monitor" category. I have the Silverline SR17.5s and they too are incredible. I would describe their sound the same way you have described the Minis "both lifelike and musical" with in room -6db at 32hz. I would love to be able to compare them with the SP Tech Mini.
We have a Winner -- Major "MINI" monitors
I just have to point out that I am one of the first recipients of the new Model SPTECH Mini speakers. To call these 40 pound each beautiful finished loudspeakers Minis is an OxyMoron. They actually cross over at 800hz so most pf the midrange is handled by one driver! But I have to tell you that after only 5 hours of use, these speakers can beat just about anything on the market today. In some ways, there really isn't anything that at much much higher prices can sound as good as the trade offs begin piling up. I exposed them to some ungodly power barrage usinga 1000wpc amplifier and they did not even blink. The sound coming out are what I call the epitome of a speaker design in that they sound both life like and musical at the same time. This is no small feat. Instruments are so well defined that the umpteen speakers I have owned can't hold a candle to them. Bob the designer and engineer is a terrific guy and very knowledgeable. These speakers destroy anything in their range and most audiophiles would be well served to try and listen to these or anything in the line above the Minis I assume. I just had to pass this on, because I am one of the lucky owners. I want to point out that I have zero affiliation with SP, but am in love wit this product. I believe you can buy them on Audiogon? They are worth several times the current asking price. Don't take my word, try and hear for yourself! There is several review on the net and what I had noticed is that none of them had anything negative to say about this line.