I agree with those who have pointed to adding a pair of Subs to increase your Soundstage, for your situation. Getting another brand of speaker in the same price point is more of a lateral move than an investment in achieving your goals.
I have speakers that perform very well within a frequency response between 30/28Hz - 40KHz. That said, after a few years I found myself wanting a more dynamic soundstage without breaking the bank. By adding a pair of REL subwoofers, I was able to extract deeper, cleaner bass, fleshed out detail in the midrange and greater sense of spatial separation. I would guess that the low frequency is about 20/22Hz.
Good Luck
I have speakers that perform very well within a frequency response between 30/28Hz - 40KHz. That said, after a few years I found myself wanting a more dynamic soundstage without breaking the bank. By adding a pair of REL subwoofers, I was able to extract deeper, cleaner bass, fleshed out detail in the midrange and greater sense of spatial separation. I would guess that the low frequency is about 20/22Hz.
Good Luck