Best firmware+software for DL burns

I’m using LG GSA-4120 for DVD burns, mostly single layer, and it hasn’t missed a beat. I want to do some double layer burns and am wondering what the best firmware and software to use is.

I have firmware A101 and did two DL burns with Nero 6.3.1.17 - one worked perfectly and the other gave a read error and resulted in an expensive coaster.

Is Nero the best option, or should I consider something like CloneDVD or BlindWrite/CopyToDVD for the burning?

And should I upgrade my firmware - do newer firmwares improve DL burning with this drive?

Thanks…