Wilson XLF owners

Just looking for some input from XLF owners to someone who may be contemplating buying a pair. Room size is about 18’x20’x9’. Any particular challenges I should know about before stepping into this very large speak. Very familiar with the Alexx. Looking for pros and cons to owning these from those of you that know. Thankyou for any input you may have. 
128x128Ag insider logo xs@2xcarey1110