I have the pre-power combo for around a year now and have been pretty happy with them. (Especially after I tried some different interconnects and speaker cable combinations)
Some pointers:
1. I find the pre to be really good for Indian music (think classical/semi classical/ghazals) and western music. It excels in finer music if that is what you are after. The pre has capacity to produce excellent sound staging - creating good depth (holographic imaging if we may say). Also I personally find it to be one of the more "musical" pre rather than being clinical. Goes well with Indian music which gives a smooth and refined rendition to music. Ideal to turn off the lights and relax and play it along.
2. My initial feeling was that the power amp was bit under-powered but it was my wrong impression due to another component in my chain (My interconnect length between pre and power was long and also a change in speaker wire really made the amps shine) The amp is powerful enough to drive my paradigm monitor 7 speakers very easily at 10 O clock volume level.
I did get a chance to compare it with some other power amps (a norge power amp and even a pass F5 amp) The power amp can be characterized with following:
a) The sound is very refined and high resolution for a class A/B amp
b) Sound is well rounder (which goes well with vocals/etc)
c) I find the sound to be just a hint on the warmer side but overall it is very very transparent. I have even paired it with my Pass B1 pre amp and it performs really really well.
d) I found that good speaker cables can make a huge difference to this power amp (I tried a different speaker cable and I was completely blown away by the pre-power combo when its full potential was unlocked.) Needless to say I have become a believer in cables/interconnects
What these amps are not:
1. Don't expect them to "Rock" as in with Hard Rock and metal music. They are far from that. They are more suitable for a subtle taste of music and more towards refinement. Fortunately I am not in Rock and those genres of music so did not care much about that.
Speaker matching is always such an important part. So that is left best of auditions.
Just thought of sharing my thoughts since you were seeking for it.
Disclaimer: I like to call an ace of spade an ace of spade and think at the current price it is a good buy. But since it is music all our tastes are so very different. I think the best way to look at it is to be unbiased and just go by our own hearing. If possible try to listen to it and see if you like it.