Hi There,
I run a DDJSX in a Oddsey flight case, 2 EV ZLX12p’s, speaker stands, a 4 ft table and lights, and it all fits in my Hyundai Elantra and I still have enough space for my sub that is on the way. so big sound in a small car is doable.
The NS7 is nice but it can weigh a ton when you add a flight case. something to the tune of 77 lbs.
The DDJSX with the Odyssey case come in at a manageable 50 lbs.
Nice thing about both is you can get either case with a gliding laptop slider. Both are great units but I love my SX. So good luck with your choice.
DJ Gee Kay