Furnace and Air Conditioner Quotes for residential home / Asking for feedback on quotes

Hello,

I'm looking to update my furnace and air conditioner from a system that is currently working however is over 20+ years old. The A/C has been fine and the furnace has had a couple minor issues with an internal board on the furnace needing replaced that costs me around 200 dollars each time. At this point any upgrade would be a huge improvement to the system. Below are current quotes I have from what I believe is a reasonable and reputable family owned heating and cooling company in town. Do these quotes seem reasonable to replace furnace and air conditioner ? Any issues I should be aware of with these brands? Any major differences I'd notice between the three options ? Thank you in advance.

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Option 1: Mid Range

Lennox 2-stage, 96% efficiency furnace

Lennox 14 Seer air conditioner unit with high efficiency coil with expansion valve Includes all materials, installation and labor.

Cost:

$8,500 cash price

$8,700 plus fee for financing options

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Option 2: Low Range

Concord 2-stage, 96% efficiency furnace

Concord 14 Seer air conditioner unit with high efficiency coil with expansion valve

Includes all materials, installation and labor.

Cost:

$7,500 cash price

$7,700 plus fee for financing options

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Option 3: High range

Lennox High Efficiency 98% efficiency furnace

Lennox 17 SEER air conditioner unit with high efficiency coil with expansion valve

Includes all materials, installation and labor.

Cost:

$9,500 cash price

$9,700 plus fee for financing options