re: What is a good AC condenser unit brand and which brands to stay away from

I’d focus more on the quality and attention to detail of the installer more so than the manufacturer of the equipment - regardless of manufacturer most single stage condensing units are comparable in function and reliability - each has pros and cons.

But since you said your house has mostly Carrier components, I’d personally try to go with a Carrier condensing unit that is matched to your Carrier indoor air handler/furnace/evaporator coil, as you indicate only the condensing is being replaced.