It's up to you. If you don't say anything then they will assume that everything is OK and you'll never have satisfaction. *shrug*

Also, I don't consider it abuse of the warranty to send it in for legitimate problems. That's exactly what the warranty is for.

Just tell Asus to replace the laptop its broken down far to much now. Or they should replace the motherboard try phoning them direct its much faster and ask for a replacement don't be fooled by Asus they are millionairs for crying out loud.

Lol be ferm with them it works. I have had dealings myself and I just told em that I was pissed off with there crap and lol they sent me a better graphics card. Only took them 3 weeks

Lol you could send it them and tell them not to send it back till its 100% fixed. My point being if you talk softly to them they do bog all be blunt say how it is they should replace the laptop money is nothing to them.

Your just chasing numbers and dealing with it wrong.

Eg Asus will replace it only if you are persistent with them hiding away is no option when it comes down to a company like asus. It's same with Microsoft they have workers if your not direct they can't fix it.

Rules one you should keep all the rma forms for future use.
Always save emails between you and asus this making it much faster to deal with the problem.
You said this is your 3rd rma demand a replacement laptop. They can't refuse you. All there products are insured.

If all fails ask to speak to a direct manager tell them that's its broken down three times even send the emails if you need to also keep photos this is a great way of showing proof. Even if asus are at folt.

Never be fooled by them saying its fixed always ask for a copy of the work what's been done most times mainly with laptops the gpu fails and all they do is add fermal paste to it. Then yeah they send it back without testing.
Asus will only do easy fixes that don't last long. Ask or demand for exstended warranty. They should be ok with this it may even have a small cost.

In end they need to get off there assess and deal with your problem if your not blunt its not going to be fixed and will just keep breaking down.