Floorstanding Speakers - 12'x14' Room


I have a 2-channel audio system which I have moved from my basement to my main floor living room. This living room is 12' x 14' with the system along the 12' back wall. The living room has a cathedral ceiling which goes from 8' on the left side to 12' on the right side. Also the right side does not have a side wall since this is the opening to my hallway. Experimenting with my existing bookshelf / subwoofer combo has revealed that I must adopt a toe-in configuration to avoid early reflections from the left side.

I'm interested in replacing my existing bookshelf / subwoofer combo by a pair of floorstanding speakers. However, I don't want something too big where I will not be able to control the bass.

By the looks of it, the speakers would be about 9' apart and 2' from the back wall. On the right side, the speaker would be about 1.5' from the side wall.

So far, I've narrowed down my possibilities to the following:

Gershman Sonogram
Totem Forest
B&W 804S
Definitive Technology Mythos STS
Aperion Intimus 6T
Duevel Planets

My power amp is a Linn Akurate 4200 and I listen to all types of music except country / western. I what something that will sound great low volume but that can also dish-it-out at high volume.

Would all these work with my living room? Any other recommendations?
agiaccio
How about the GR-Research NEO-2X? As a kit there around $800 but will easily compete in the $3k range.
You mentioned twice there isn't any side wall on the right side since it's an opening to the hallway, and on the other hand you stated the the right speaker is 1.5' from the side wall. So, which is true? If there is no side wall on the right, the width of your room isn't exactly 12' and that may allow consideration for bigger speakers.

At any rate, I generally agree that monitors on stands coupled with a subwoofer is a better option in smaller rooms to avoid overloading of the room that may cause boom. Small bookshelves often sound better in small rooms with pin-point imaging but a subwoofer(or a pair) is necessary to complete the package. Your friend's recommendation on the Proac Response D Two is a good one. I am not sure what is it that you dislike about your current Linn Katan but the Proacs are really good speakers. I just acquired a 2nd pair of Proac Tablette 50 Signatures and found them to be very musical and engaging. A subwoofer is a must for these speakers even in small rooms. I have them in a dedicated room with diffusors on front wall and absorption panels on side walls and these small little speakers sound quite amazing. Good luck.
You mentioned The frequency of the Katans in Aktiv (active) mode. Is that how you run them with your Linn amp? If not that might be your first step before selling the Katans. Or another Linn option? Linn speakers do sound better used in active mode.
Yes, my Linn Katan monitors are in an Aktiv configuration. However, to my ears, I feel that these speakers are not delivering the full dynamic range that my sources are capable of retrieving. Even with the subwoofer, bass seems to be lacking.

Also, as I mentioned in my "correction message" (2nd post), there is no side wall on the right side of this room however the hallway wall is about 7' furhter than the opening of the right side of the living room.
Why not the Legacy Classic HD, used is about the same price as what's on your list. I can get you a new pair for way below retail. Most dynamic speaker I've heard at this price point.