Any help is appreciated!

My 8 years old 5 Ton Amana R22 outside condenser is dead and inside cooling coil is also leaking so I am thinking to replace both of them with R410a system. I am using gas furnace with fan so I don't have to replace furnace, correct?

Got several price quote, best priced contractor gave me 2 quotes like this,

1. Amana ASX140601 + goodman CHPF4860 cooling coil + other parts freon labor etc, let's say price at XXXX

2. Goodman SSX140601 + goodman CHPF4860 cooling coil + other parts freon labor etc, price at XXXX minus three hundred bucks.

He told me other parts freon labor are the same, cooling coil is also same, the only difference is the outside condenser. He said Amana ASX14 is totally same, a rebadged unit from goodman SSX14, but a better brand so for three hundreds more. Is he correct? Is it worth that more money? I did research on both websites and seems they are from same company Goodman, and have exactly same warranty (lifetime compressor and 10 years other parts).

One more question is, On goodman website they listed Product Features as below,

•High-efficiency scroll compressor
•R-410A chlorine-free refrigerant
•High- and low-pressure switches
•Liquid refrigerant return protection
•Factory-installed liquid line filter drier
•Copper tube / enhanced aluminum fin coil
•850 RPM condenser fan motor
•Service valves with sweat connections and gauge ports
•Louvered sound control top for quiet operation
•High-quality compressor sound blanket
•AHRI certified; ETL listed

But on Amana's website, they only listed Product Features

•High-efficiency scroll compressor
•R-410A chlorine-free refrigerant
•High-density foam compressor sound blanket
•Factory-installed filter drier
•Copper tube / enhanced aluminum fin coil
•Amana brand sound control top for quiet operation
•Long-lasting Amana brand quality and durability
•Service valves with sweat connections and gauge ports
•AHRI certified; ETL listed

Basically Goodman SSX14 listed the following 2 feature but not listed for Amana ASX14, why? If Amana is more expensive but with less feature then I will go with Goodman, if they are indeed same feature just Amana not listed on the website, then I can consider to go better brand (and quality?) with a little of more money, correct?
•High- and low-pressure switches
•850 RPM condenser fan motor

Thanks again for reading. BTW, do I need expansion valve ?