Advice on choosing speakers

Hi all, first some background... I am a music lover first and foremost. I have resisted the urge to upgrade my system for many years now (1973 MA6100 integrated, 1975 4-way XR7's, and a KCD-20 CD player that were all bought used) - but I am getting ready to take the plunge. I plan to buy all new components end-to-end. I believe that the first step is to choose appropriate speakers, and then select source and amplification to match. I listen to a variey of music, and understand that finding speakers that will do all styles well will be a compromise. I listen probably about 40% to acoustic instruments and vocal (bluegrass, folk, country and jazz) and 60% to rock music in a large room. I do not have a specific budget, but let's say less than 10K used. My four criteria so far are:

1. Speakers that are sufficiently detailed and nuanced to reproduce the intricacies of acoustic sound; true audiophile quality sound.
2. Able to handle the attack and low end of rock music at high levels of volume.
3. Have aesthetic appeal - this is entirely personal taste.
4. Made by a company known with a L/T reputation for standing by their product from a parts/service/dealer perspective.

So far, I have listened to very few speakers. I liked the look, clarity and detail of the Nautilus 802's for example, but found then lacking in low end and perceived ease at higher volume levels with rock music. I will next audition the N801's. Am I barking up the wrong tree here?; can you recommend your favourite speakers that will give me that detail and trasnaparency while being able to produce a "wall of sound" at higher volumes?

Thanks in advance for your help!