Would you add a Hartke 115 XL to a Bag End S15-D, for the purpose of getting a little more low-end 'hump' into your stage-sound? I have 2 Baggie S15s, and want a cab for a rehearsal space so I have one less item to truck around. I'm a carpenter days and only have 1 vehicle, so unload/load can get to be a hassle- especially with general family (read: Joyful but schedule-creating!) duties... I like the Hartke thing, and wonder if the 15XL + a Bag S15-D would make a successful combo? Thanks!