Had to replace my 26 year old Carrier 90% at my lake house with a went with the Goodman GMVM97. The Carrier at some point stopped for a period and some pipes froze and burst when I turned the water on. That Goodman is the variable fan with the ecm model. It is about as loud as the Carrier when it starts up then quickly quiets down. So far it works well. It runs on propane and because some years propane gets scarce and expensive, I’m happy to pay for a more efficient model even if it is just 7% more efficient. This model requires the Goodman Comfortnet thermostat to harness the features of the furnace and my only beef so far is that the thermostat cost $650 from the installer even though you could find it for $450 on the internet. The Carrier just couldn’t heat the whole place any longer as it would just give up and stop if you set the temperature to a comfortable temperature so it would always be too cold. It routinely gets to -30 f in the winter and colder with windchill. The HVAC guy really pushed the Carrier model with Greenspeed. That is the top Carrier model currently, which is the equivalent model to the Goodman I bought. The Carrier was about $1000 more but the Carrier thermostat was about $200 cheaper. I like the Redlink functionality and that you can add wireless outdoor temperature sensors and indoor temperature sensors and make the furnace average the temperature from the indoor sensors instead of just use the temperature at the thermostat. You can also use a remote sensor that you can carry around and control the thermostat from whichever room you are in and also force the furnace to use the temp from the remote sensor if you want. Plus, of course, the ability to control the thermostat via a smart phone or computer.