Best replacement remote

hello all, 2016 TLX SH AWD.

i have only one remote with the vehicle, and i will not push my luck for long. i am sure i will not want an aftermarket -- tried this previously and, cost is a lot less but two of them failed almost immediately.

so two questions -- where best to purchase acura replacement (i can program), and what about the backup key inside (i believe it opens the compartment)? not sure i will need it, but it would be nice to have that key.

any ideas to avoid the dealer on this? thanks