As others have emphasized, you need to go out and hear a few candidates to get a better idea of your own preference. It is also a good idea to hear different fundamental types, such as large planar speakers (e.g. Magnepan), omni-directional speakers (e.g., MBL, German Physics), electrostatic and hybrids (e.g., Martin Logan). A lot of these might be out of your price range, but, used models might be in the balllpark.
As for any specific recommendations to audition, that is a bit tricky without any context of what you have heard and liked, and what are your plans for electronics. I do have some general recommendations for models and brands that are sort of universal--they may not be everyone's favorites, but, most people do not find these highly objectionable. It is like recommending chocolate, almost everyone at least likes chocolate even if it might not be a favorite, vs. recommending cilantro (I like the flavor, but, a lot of people really hate it). My "chocolate" recommendations are: 1) Tekton Double Impacts (good sound for the money and BIG advantage of being easy to drive which opens up the choice for electronics); 2) Audio Note AN-J, AN-K (warm, rich sound while still being lively; easy to drive); 3) Rethm Bhaava (built in powered woofer and easy to drive; a super bargain); and 4) any ProAc model near your price range).
As for any specific recommendations to audition, that is a bit tricky without any context of what you have heard and liked, and what are your plans for electronics. I do have some general recommendations for models and brands that are sort of universal--they may not be everyone's favorites, but, most people do not find these highly objectionable. It is like recommending chocolate, almost everyone at least likes chocolate even if it might not be a favorite, vs. recommending cilantro (I like the flavor, but, a lot of people really hate it). My "chocolate" recommendations are: 1) Tekton Double Impacts (good sound for the money and BIG advantage of being easy to drive which opens up the choice for electronics); 2) Audio Note AN-J, AN-K (warm, rich sound while still being lively; easy to drive); 3) Rethm Bhaava (built in powered woofer and easy to drive; a super bargain); and 4) any ProAc model near your price range).