Personally, I don't think you can go wrong with either one. :)

The true deciding factor should be the competence of the installer on every level. Ask a lot of questions and expect timely and direct answers. There's a lot of aspects that could go wrong and a good dealer will mitigate mostly everything and be willing to stand behind his/her work. Good luck.

These are comparable systems.

I assume the Carrier furnace model is the 58CVA 70 KBTU model. It will require the Infinity controller, no substitute. Wifi Mdl available if interested.

On the Trane, nice system as well. I assume the 80 or 60 KBTU XV80 furnace. It will require a true two stage thermostat, either the Trane XL900 or HW VP IAQ stat Mdl 9421. WiFi Mdl available if interested. On Trane condenser, you might check the XR17 AC model.

What about filter media cabinets? You will need one. Both systems only best matching brand evap coils. No third party coils allowed.

I wouldn't have a problem with either system. I probably would let price, dealer reputation, and your comfort with the dealer be my guide.

I prefer authorized Carrier and Trane dealers.

IMO