I'll add that extracting full performance from a speaker system takes work. Be prepared if you're going that route. It's not as straightforward as the SR-009s would be. You would have to install acoustic panels, buy and install or build and install your own diffusers, place the speakers, re-place the speakers, and re-place the speakers again until you get the image properly dialed in. If you enjoy the endeavor of better sound it's worth it, but you should be sure you do. Getting quality performance from a speaker rig is cheaper too if you're willing to put in some stress, take some chances with your money, and buy off the used market. You could really build a quality speaker rig and still have money left over for a flagship or near-flagship headphone for the price of one SR-009.
X2 for sure. You could spend a fortune on room treatments not to mention powering up everything with dedicated lines and all that entails as well.