OK, I'm a newbe as well as far as the Tamiya tanks are concerned. I was just trying to get a definition for "standard" as it applies. Seems we will have to wait and see what the reliability factor is on tanks other than Tamiya that are equipped with after market boards and use the TBU in actual battle scenario's. Not having competed in an organized tank battle, I can't make a judgement and must rely on those of you who have. I haven't experienced any breakdowns in my Tamiya or IMEX TBU equipped tanks so I will continue to enjoy both. Thanks for the replies guys.