I have that brand/model for ddj-sr2. My thoughts...
1. It's heavy. - Solid build. A friend has one for his sx3 and it needs the wheels that are on it.
2. Controller fits great. - nice and snug. The hard plastic dust covers fit also (mine just a tiny bit of trimming to some internal foam).
3. If you use an ADJ pro event table, it's not high enough for the sliding shelf to work unless you raise the booth table about an inch. (You can do this by screwing in the table brace tightening screws before you put the table braces in. ;-) )
4. My laptop shelf slides off too easily. meaning if I slide it open and I'm not careful, it will slide off the back. Mine has small "plates" on some screws inside the case that rotate up and will stop the top shelf from sliding too far. It works, but took me a while to figure it out. This is my only complaint about the case.