(Although I have to admit I haven`t had a chance to compare them to Adams)
But while comparing them to other speakers I could hear every instrument more clearly on HS7s.
The only downside is, they are maybe lacking a bit on bottom end, but still the pitch and shape of sound of the bass is more clear on HS7s.
I use them in my home studio and for me they do their job perfectly.
Also they seem to be very robust and well built.
Edit: I got focal trios - now these Yamahas seem like a toy, but still, they are a good solid monitor, that has served me for half a decade.
If you wish to start on studio work, I recommend.
(the stars are all considering the price, the would be one star less if the price/performance was not that good)