Indeed. Though going above and beyond is important to me as well. We just seem to have different ideas about what that means too.

I think patio11 says it best:

"I appreciate that you'd feel safer going with Brand Name X, and Brand Name X will indeed have someone around to answer your phone call at 2 AM. Unfortunately, they won't be able to do anything for you. Their only job is getting you off the phone before you can speak to someone capable of resolving your problem, because those people cost money. And you know what happens if you call at 2 PM? You get the same guy."

As in, you might not get a response for 16 hours, but when you do it will be from me, the guy who built the thing. And it'll be to tell you that your problem has been solved and no further action is required on your part.

Incidentally, I don't have email on my phone. Nor do I carry my phone around most days. I sometimes go a few days without checking email while on vacation, and I'm on vacation a lot. If I could give you one piece of advice, one solo-founder to another, it would be to figure out what you can change about your product so that you can do the same. It's entirely your gig, so it's up to you to choose whether anything unpleasant is part of it.