The build quality is superb, and both bikes that I own, full suspension and hardtail, get used throughout the whole year in some pretty torturous conditions, and other than regular maintenance, have required nothing.
The only changes that I have made over my period of ownership, have been tyres and the addition of a front neo guard. Both of which are purely a personal choice. I can only assume that because the company have a proven track record of world level mtb racing, that design aspects have filtered down the development line, so making the bikes feel right, straight of the box.
I can only suggest that as you have a dealer local to you, that the best thing to do is to pop along and try some out.