For LOTS of devices the last few volts can be the difference between
good operation and crappy use.

Lamps are like that, the last few volts is about 8% of the total
britness. I used to fix copiers for a living, slight voltage drops
caused major grief.

if your running a 120 volt moter it probably doesnt matter....

All conductors have voltage drop but alunimum is much worse than
copper.

cheapinbg out on a one time expense is poor planning...

Been there done stuff like that

my 100 amp main service is a memorable stupid move.

Sometimes cheaper isnt better

the price difference is under 300 bucks, for a one time lifetime
expense..

besides at resale a home inspection, and nervous buyer.... equal pain
in you know what.