The best brand of furnace is the furnace that is sized correctly and installed correctly to code. The vas majority of heating and air conditioning breakdowns are not from defective equipment, but from defective installation.
We all have favorites. If you want the cheapest furnace there are couple of brands on the market that are for sale for a few hundred dollars cheaper than the other brands on the low end scale. There is a reason for that. They lack the insulation to quiet them down, the burners put out more heat and therefore they need fewer burners. There warranties are not as good and the factory has very little support for the contractors. Over the last decade or so a couple of these companies have given into very long and great sounding warranties. All of “too good to be true” warranties like “99 years” are plays on the English language. Their extended warranties are purchased through a warehousing company back east. These aftermarket warehouse warranty companies typically operate for 6-8 years and then fold up shop claiming bankruptcy only to start up again under another name.