You are likely to get the most "bang for your buck" from upgrading your speakers, and from proper room treatment, such as installing diffraction / absorption materials.
One of the important factors, given your room size, is how loudly you like to listen to music. If you prefer to listen at high volumes, then you should look for a speaker that has relatively high efficiency (90 db or higher) (Horn speakers are typically high-efficiency, but they may lack "wife appeal", and not everyone likes their sound.)
Coincident Technology, for example, makes very efficient dynamic speakers. Virtually all "bookshelf" size speakers are of low-to-moderate efficiency, although there are a few that might be worthy of consideration.
Most of your system is of good quality, but in my opinion the Polk speakers are the "weak link". There are a number of very good speakers available today for less than $3000 (MSRP), and a number of them are listed in the most recent "Recommended Components" issue of The Absolute Sound. Among the speakers in your price range that TAS recommended are:
1. Audio Physic Yara ($2000)
1. Focal-JMLab 906 ($2200)
2. Totem Hawk ($2300)
3. Thiel CS 1.6 ($2400) (these speakers can be very bright, which may be a problem in your live room)
4. Reference 3A MM DeCapo I ($2500)
5. Von Schweikert VR-2 (($2500)
6. Spendor SP-1/2 ($2750)
There are four other speakers I'd add to this list:
1. Gallo Nuclear Reference 3 ($2700)
2. Spendor Sp-1/2 ($2750)
3. Vandersteen 3A ($2800) (or the Vandy 3A Signature: $3500)
4. Martin Logan Aeon "i" ($3300)
Whatever speakers you decide are worthy of final consideration, they will definitely be affected the large size and "liveness" of your room, so you will probably want a speaker that is capable of projecting a large soundstage (unless you effectively reduce the size of the room by adding some free-standing acoustic panels about mid-room). And, given the size and acoustics of your room, I think an "at-home audition" is virtually mandatory.
So, despite the fact that you have no dealers near your home, you should try to locate a good dealer that will allow you to take the speakers home for at least one night, and preferably for the weekend. If you will tell our readers where you live (which state, at least), some of us may be able to give you recommendations about dealers that are within a half-day's drive of your home.
One of the important factors, given your room size, is how loudly you like to listen to music. If you prefer to listen at high volumes, then you should look for a speaker that has relatively high efficiency (90 db or higher) (Horn speakers are typically high-efficiency, but they may lack "wife appeal", and not everyone likes their sound.)
Coincident Technology, for example, makes very efficient dynamic speakers. Virtually all "bookshelf" size speakers are of low-to-moderate efficiency, although there are a few that might be worthy of consideration.
Most of your system is of good quality, but in my opinion the Polk speakers are the "weak link". There are a number of very good speakers available today for less than $3000 (MSRP), and a number of them are listed in the most recent "Recommended Components" issue of The Absolute Sound. Among the speakers in your price range that TAS recommended are:
1. Audio Physic Yara ($2000)
1. Focal-JMLab 906 ($2200)
2. Totem Hawk ($2300)
3. Thiel CS 1.6 ($2400) (these speakers can be very bright, which may be a problem in your live room)
4. Reference 3A MM DeCapo I ($2500)
5. Von Schweikert VR-2 (($2500)
6. Spendor SP-1/2 ($2750)
There are four other speakers I'd add to this list:
1. Gallo Nuclear Reference 3 ($2700)
2. Spendor Sp-1/2 ($2750)
3. Vandersteen 3A ($2800) (or the Vandy 3A Signature: $3500)
4. Martin Logan Aeon "i" ($3300)
Whatever speakers you decide are worthy of final consideration, they will definitely be affected the large size and "liveness" of your room, so you will probably want a speaker that is capable of projecting a large soundstage (unless you effectively reduce the size of the room by adding some free-standing acoustic panels about mid-room). And, given the size and acoustics of your room, I think an "at-home audition" is virtually mandatory.
So, despite the fact that you have no dealers near your home, you should try to locate a good dealer that will allow you to take the speakers home for at least one night, and preferably for the weekend. If you will tell our readers where you live (which state, at least), some of us may be able to give you recommendations about dealers that are within a half-day's drive of your home.