The cigarette plug is fine for temporary use. I prefer wiring the positive lead directly to the battery and the ground directly to the chassis. I use ring terminals that I crimp and solder.
There are pro's and con's with Anderson's and the T connectors. I have so far just used what comes with the radios and haven't made the switch to Anderson's yet. If you decide to go with Anderson Power Poles, then I will suggest sticking with the actual Anderson brand versus the cheap knockoffs found on Amazon.