I totally agree all firmwares should have the option to set it only once so that all DVD+, DVD+DL and DVD+R|W will always burn as DVD-Rom.
By using this format it makes it compatible in almost every stand alone, I don’t see what the big deal is. But I do suspect the movie industry has it’s hands in it and some drive manufacturers are honoring their wishes.
My NEC3540 sets the booktype to DVD-Rom as default for DL+ media only, for SL+ I had to use hacked firmware.
My Liteon is older and doesn’t burn DL but with hacked firmware it burns DVD+ and DVD+ R\ as DVD-Rom.
I would only buy a burner that I know I would be able to change the firmware, bitsetting would be done by default, whether it be the manufacturers firmware or I’d make certain hacked firmware was available for the drive I intended to buy.
I have no desire to use a utility to do it before every burn, besides I’ve read those utilities don’t always work and are unreliable. The most relaible method is have the instructions in the firmware itself.