THe DBC is a good system. You can get rid of the Heng long whiplash recoil, and run user recordable cannon and hit sounds. I have 4 tanks rigged up with it, and I received another couple of units just before Christmas. I'll be using the DBU on the Sherman.

The guys in Arizona just had a battle day, and the reports on the DBC were that it was completely compatible with the Tamiya system. This is not a plug and play system though, and requires soldering skills good enough to solder to the Heng Long ESC.