Pepere,
I'd recommend it without hesitation, particularly at that price. As others have mentioned, despite its systems depth it runs as smoothly as default on almost all setups. Once installed, a little easy legwork is required in initially configuring your controller...particularly for the throttle zones and condition lever detents. All of this is very well explained in the manual and not difficult. Beyond that, it's actually a fairly easy plane to get the hang of. If you've toyed with any other advanced simulations in FS (PMDG, Level-D, etc), then it won't take long to get accustomed to the Q400. And ohhhh....those sounds! Easily some of the best aircraft engine sounds in FS! I love the deep purr at takeoff and the way the props 'nibble' at beta when taxiing or on landing.
Good luck!