Which one is a better brawler build? The Big Guns / Short Range AC 20 build OR the fast and more versatile UAC5 (better jump, more ammo, but hotter because of UAC rapid fire) Probably would be much better with STD engine, but then super slow (and speed and outmaneuver is life). Its possible to downgrade the engine and put more ammo if needed in this build.
Oh! BTW, those builds are more about flanking the enemy / running from behind heavy stuff, or brawling mid mechs. I won't recommend Face to face duel with ATLAS or Highlander in that.