I just got the Technics SU-G700 and love it, but I feel it's an acquired taste.
I'm not 100% sold on the class D vs ??? Debate (don't know enough), but I was really tempted to get the SU-R1000, and am in love with the SU-G700. It sounds great, but as others have said it really fluctuates it's sound based on what other source components you have before and after it.
It seems like it obviously has more potential than your classic integrated amplifier, but again some of the new things/tech could be gimmicky, and others may not like the tonality of it all.
The most interesting thing about this amplifier is that my DAC (Gustard X26 Pro) which has three filter settings and according to the internet primarily only is one good (Vivid), sounds overly bright and almost has the degree of reverb that resignates through most vocals with LAPC enabled. When utilizing all the Technics digital wizardry the amp doesn't project the sound of vocals as well forward as my other amps (as opposed to off center right or left IDKW?).
This is a really strange kind of amp, but I love it and it does sound really good!