We are replacing the 2 old HVAC systems in the house, one is 2 ton and another one is 5 ton. We are down to the following 2 quotes. Both installers have similar good ratings on yelp.

Quote 1: Rheem: $25K

1 RHEEM R801T 050 3A14 UHSNSA upflow 80% 50,000btu furnace

1 RHEEM RA14 AZ24AJ1NA 410a 2 ton 14 seer condenser

1 RHEEM RCF 2414STAMCA 2 ton cased coil

1 RHEEM R801TA 125 524 ZSB downflow 80% 125,000btu furnace

1 RHEEM RA14 AZ60AJ1NA 410a 5 ton 14 seer condenser

1 RHEEM RCF 6024STAMCA 5 ton cased coil

Quote 2 Bryant: $21K

Installer didn't provide the exact model numbers

Furnaces are 801SA.

Air conditioners are 115SAN.

Coils are CVPVA----XMC.

Quote 1 Rheem has an upgrade option for extra $4K:

1 RHEEM R802TA 125 1524 ZSB downflow 80% 125,000btu 2– stage furnace

1 RHEEM R802TA 050 1314 ZSB upflow 80% 50,000btu 2– stage furnace

Quality wise, are Bryant and Rheem similar? Which one of these is the better option? Is 4K a fair price to upgrade to 2 stage?