If you are expecting a swiss arms out of the famae sg 542 it isn't there. Not because of the manufacturer. The design of the famae sg 542 is an older design. Examples are the gas block is different, the flash hider is pinned on, the springs for the trigger are all linear instead of coiled and the receiver is narrower.
Honestly though its a good gun and fairly accurate. Waiting to get a scope on mine to see what it can really do. The biggest things you will notice about the famaes are the paint isn't as good of quality (seems to chip and flake off easier than you would expect), the plastic hand guards are not as refined and finished as nice as the swiss stuff, and the pinned on flash hider. Oh and one of my takedown pins broke one of the tabs off (may have just been a bad one). Otherwise the metalwork and machining is as good as it needs to be where it needs to be. No more and no less. The mags are in short supply from the sounds of things and one of mine required the old 200lbs press (my foot) as the floor plate fell out a few times, been good ever since. I can't say I am disappointed with my purchase. My swiss arms was by far a better deal (got it second hand for slightly less than I paid for the FAMAE) and the design improvements and product quality make it my favorite.
Having said that and thinking back to my financial situation several years ago vs now. If now was then I could have bought 1 gun for the price of a famae or the M-305, a Remington 700, a shotgun, and an sks plus a scope or two. I would have gone with option #2 and had the best of all worlds.
Having owned a swiss arms, I'm used to the layout, they look good together and I am short on space. It was a no brainer.