I love my modified Steadicam Jr, I picked it up on Ebay for nothing and kept bolting on large washers until it'd balance a DSLR. It is great for run and gun, due to the center of balance being above my hand I can shoot for eight hours on the 5D Mark III and 24-105 with little fatigue. I also recommend the Flycam and Glidecam, but the Steadicam Jr. or Merlin is the way to go if you plan on shooting all day and don't want a vest or brace.