It’s not a bad tweeter per se, besides the somewhat limited dispersion due to it being a large-ish (1.25") tweeter. If you want a larger soundstage you probably should opt for something smaller like a 1" tweeter. But the tweeter is perfectly competent. In fact most people’s issue with the BE-718 seems to be the paper woofer is a little muddy at higher SPLs.
If you want clear and open sound, then at your price range I would look at a used pair of KEF R3 or Buchardt S400. Both are very flat in terms of sound power and directivity index and should sound very open and consistent across a wide space. You could also try a pair of Revel M105s with a subwoofer.
If you want clear and open sound, then at your price range I would look at a used pair of KEF R3 or Buchardt S400. Both are very flat in terms of sound power and directivity index and should sound very open and consistent across a wide space. You could also try a pair of Revel M105s with a subwoofer.