I have not listened to the emotiva 8's but you can see from ADAM's homepage that they are certainly no part timers, almost industry standard for smaller studio's. I provided the link so you could do your research, in Europe they are highly recommended from local suppliers as a budget entry to studio performance. They are certainly MUCH better than KRK RP8's and have had won several awards for the A8X and A7X monitors over the last few years. From my perspective emotiva have "cloned" the ADAM design not he other way round, the F series is the entry level "home studio" systems that were launched early last year iirc, the Aseries have been around a while. If you got money and want to go for serious equipment you will be totally blown away by the S2X. You also have options regarding subs' from a lowly 7" up to monsters 200w 12" monsters.
I dont like to advise people to buy blind when spending their own money, I was just trying to offer an alternative to investigate. There are distributers/suppliers worldwide and in EU you can source some though Amazon if you would rather that sort of supplier. I always recommend listening first as active monitors are more for nearfield listening rather than room filling sound.
Regarding volume, I personally don't push my speakers to anywhere near full volume as I am listening within a couple of feet of the cones and I value my ears.