Ascend Sierra 1 vs Triangle Borea BR08

I decided to upgrade my current bookshelf speakers (Infinity R162s). I've settled on 2 options based on some reviews: 

• Ascend Sierra 1 (on sale for 680/ pair) 
• Triangle Borea BR08 (on sale for 800/ pair) 

I'm newer to audio stuff, but I felt it was a good time to upgrade. My current system and listening area: 

• Denon AVR-X2600H (95WPC) 
• HSU VTF2 MK5 
• Fluance RT-85 (Nagaoka MP150) 
• Art DJ Pre II (12V power supply upgrade) 
• 24'x15' living/dining area with 9' ceilings
• Not treated and can't be because WAF
• Opening to kitchen and staircase 
• Listening Position about 7-8 feet from speakers currently

Originally I thought the Triangle might fill the space better and I like that is 3-way. That said I've heard some middling reviews about response.

Sierra 1s are at a great price, and I would assume better quality. What I'm concerned about is achieving adequate volume in the space.

I value accuracy above volume, but I don't want it to sound anemic in space. I will probably end up just trying both and judging for myself, but curious as to your opinions. 

Thanks! This is my first post here.