Recommendations and thoughts for end game speakers and amps


Good morning all. I am looking at Rockport Avior ii speakers. My dealer likes Boulder amps with these but I wanted to get everyone’s opinion first. I will be getting an integrated with HT bypass. Right now I’m looking at the Boulder 866, Gryphon Diablo 300, and the Simaudio 700iv2. Has anyone listened to these speakers with these amps? I’m looking for highly detailed but not harsh highs and mids and outstanding bass as well. Basically a set up that performs fantastic from top to bottom. If you have any other speaker or amp suggestions please let me know. Thank you! 
ronboco
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@verdantaudio 

I read here the built in streamer / DAC in the 866 is quite good for the 2k it costs and worth it so that is why I will probably get it. My room a our family room. 23x18x18 high. Open to stairs and and hallway areas and upstairs walkway. It’s treated (see my systems page). 
Thank you again to everyone the advice here has been extremely helpful in my decisions. 
@tvad Compared to $15K....$5-$7k is quite reasonable.   That being said, no dealer (I am an AQ authorised dealer) can or should post discounted pricing in a forum.  That is a violation of the MAP.  

@ronboco  If you stick with the Boulder and DAC, I tend to find silver coated copper cables to drift a little brighter.  Nordost would be a good choice.  Only thing to note is that their cables are unshielded so you need to take care not to coil it.  
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The OP said he was looking for cables that are more reasonable than $15K.  since this is an all-in-one solution, the only cables really are speaker and maybe a power cable so that was my inference.  Could be wrong.

You are right, those are $5-$7K.  I was thinking the copper versions which are much more modest in terms of MAP Pricing.  I quite like the Robin Hood cables in copper for the money. 

For InAkustik - reference air LS-4004 ($5500-$6600 MAP for 2-3 Meters) would be in that range.  The 1204 and 804 are less expensive.