Caveats: I’m not an electrician. If you have doubts about your electrical service, call a certified electrician.
Many of the issues I read in this thread sound symptomatic of a poor or failed return path for your electrical service.
if you’re seeing dimming lights while there’s load (such as...
Came here to say exactly this. I recently ordered an R1T dual large performance. For comparison I priced a dual standard with this latest offer, and it worked out significantly more expensive for less conferred value (options, range etc).
Agree that a 2.99% finance offer would be better, though...