For the convenience, the quality is pretty good. And while it might not be top gourmet, they do a decent job of maintaining a strong good quality at a reasonable price, especially for having an immediate drive thru option.
I'd actually say what "suffers" is the variety more than anything, when keeping food hot, fresh, and ready to hand over in a minute or two, they just can't maintain a ton of stuff on hand. That said, they never hesitate to prepare fresh on request, or if they notice what they'll be serving isn't as fresh as it should be.
I can count on getting a reliably good meal at a decent price, on the fly. I probably couldn't eat here daily just because I have a few things I really like, and I'd hate to eat them too often and get tired of them - but weekly, sure.
I feel like I get my money's worth and then a bit - which makes me a satisfied customer.