@clh42
I almost exclusively use Goldbrick (except for pumpkin competition, Photoblast), and feel that it’s potential for scoring more coins is greater than Goldslam.
At “level 3,” Goldslam gives you 400 coins. So basically for every 3 “energized” objects/buildings you shoot to get energon, you can get at most this much. So for levels in Pig City where you typically get the most of these, you’d need to shoot 21 energon items to get 2,800 coins ((21/3)x400)=2,800, not possible on most nodes in the game where there might only be somewhere around 9-15 energon objects normally to power-up with, earning you just 1,200-2,000 coins.
Goldbrick, on the other hand, can get you 4x on everything you shoot, so between the missiles (gold missle = gold block), walking mortar towers (400 coins each at 4x), and hopefully at least a couple gold blocks for 1,000 coins each, it’s much more profitable on most levels to use Goldbrick, even if you’re shooting a lot of those items at 2x or 3x with a lesser power-up. Using a high level Soundwave or Energon Grimlock clears the screen fast and scores big coin.
After playing over 8,400 nodes in this game, I believe it’s random as far as which version of that node you’ll be playing each time, however there are definitely some levels that I recognize from the beginning that have more gold bricks than others, so I can go back out of the map and re-start the level with a different energonicon.