My Aero 15X v8 is in my hands (thanks, OC). I've seen no problem with the keyboard; it's one of the best I've used on a laptop. But perhaps I'm not doing whatever creates the problem. If you can tell me how to replicate it, I can tell you if it's still a problem.
I've not yet pushed the laptop hard, but on the whole I'm impressed. The trackpad is taking some getting used to, partly because I'm used to being able to track across the whole pad, and the scroll works in reverse from what I'm used to. But it's working well, it'll be fine once my muscle memory adjusts.
Slight irritations: I had to find and download the fusion software to stop the keyboard playing preset patterns at me. I also had to download the latest GeForce Experience because the one installed kept crashing.
Major irritation: If I plug my headphones (AKG K845) in, I have to restart the laptop to get it to recognise them. I realise this is partly the fault of the headphones because it works with another pair. But, even with that pair, it doesn't recognise them as a separate device, it just takes over the speakers. This is an odd way of operating. If anyone has any ideas, I'd appreciate it.
Overwhelming plus: The screen. It's a thing of outright beauty. Clear, excellent colours, and super configurable. This was the deal-breaker for MSI, in my mind, and I'm not disappointed.
Any questions anyone has, shout up.