Well, Henry gave the 12016 a serious workout.

Let me say that this is a very good speed controller. It took awhile to get it programmed, but I like the features. I set it up the way I wanted, then I let it automatically program itself. After its first run, I shut it down and restarted it. The settings were still there, but it had adjusted itself perfectly.

This thing ran until the batteries (Pro-Match IB3800s) gave out. No thermals. Not even very hot. It kept taking abuse all day. I am very impressed.

When my 16020 returns, I'll test it once, then shelve it as a backup. The 12016 is more than enough for my 13-pound E-Maxx with 7" tires.