I responded to your other missive before seeing this one, but in my opinion, Roland and Mackie gear tops the list. They offer little coloration to your sound and are roadworthy as all get out. For medium-sized venues, they're hard to beat.
Be mindful of the fact that you want CLARITY over simple raw volume. A well-balanced combo speaker can actually do a better job than a more watt-endowed setup when the frequency range is covered properly, so it reaches the crowd more effectively.
Distortion has its place, but sound reinforcement isn't it. You'll also find that you can get all the Korg has to offer at lower volumes when the speaker is efficient.
I have a pal who still uses an old Roland Cube and its cranking right along. I'm a bit biased in favor of gear that I know is TOUGH, so keep researching, but "roadworthiness" often translates into better equipment behavior across the board.