Your question is impossible to answer. Audio is a 100% subjective sport. The best speaker is the one that you enjoy most in your room with your particular setup. No one else can tell you how much money you spend will give you how much "better" speaker.
Let me share with you an experience I had recently. I own a pair of Martin Logan SL3 for a few years and recently I have upgraded it to a pair of Vandersteen Model 5. Of cause I think the Model 5 is much better than the SL3 or I would not have spent 4x as much to upgrade. But a friend of mind disagrees. He likes the SL3 better than the Model 5. Why? Because the SL3 has faster transient responses and that he thinks make music sounded more real. So I offer to sell him the SL3 since he likes it so much. He said thanks but no thanks, he wants something better.
Let me share with you an experience I had recently. I own a pair of Martin Logan SL3 for a few years and recently I have upgraded it to a pair of Vandersteen Model 5. Of cause I think the Model 5 is much better than the SL3 or I would not have spent 4x as much to upgrade. But a friend of mind disagrees. He likes the SL3 better than the Model 5. Why? Because the SL3 has faster transient responses and that he thinks make music sounded more real. So I offer to sell him the SL3 since he likes it so much. He said thanks but no thanks, he wants something better.