I think they all interlock the same way.
If you want a set anytime soon, get the DS&E ones, no doubt about it. I'd get the cheap Moroso ones second.
I don't want to vendor bash, so I'll keep quite on the other two companies that make them.
I'll put it this way, I ordered a set about a month and a half ago, from two companies in that time frame, and I'm still without a set.
I REALLY get fustrated when parts are holding up my build. Especially when they never said there'd be a hold up when I ordered them,
.