If I'm correct, the Open Panzer has been discontinued. The IBU2U is far from new.....It has been around for a long while. I use mostly IBU boards and love the sound sets. Mostly plug and play for Older HL and Taigen tanks, with the versatility to run servos and such. It is pretty large and harder to squeeze into smaller tanks. Im looking at my IBU sound files right now......It has 41 different sound sets with the ability to add your own sound files. I've also mixed and matched different guns, engines, etc. to create my own tank set, (ie. M36).