When playing DLR one of my instructors mentioned I really need to pay attention to grips.
I normally control ankle and collar.
But I've seen variations of : ankle and belt, ankle and sleeve, collar and sleeve etc.
Which one or more dominate than the others?
Also is there a grip that you don't allow the person on top to get no matter what (when playing DLR) of course 
They all have there positives, but if there was one that was "dominate" it would be ankle and belt just because the belt grip is the hardest to break, once you go ankle and belt you are looking to get the back with either the babybolo or getting the hips on the mat to enter the berimbolo
Ankle and collar is good when they break the collar grip because it sets up the ankle and belt grip, they posture up and you can than get the belt grip
Collar and sleeve has a lot of options, triangle, omoplata, overhead sweeps, etc...De La Riva is so dynamic, different grips, the movement, switching in with spider, lasso, RDLR
When on bottom you have to try and prevent them from controlling your non de la riva hook leg, you don't want them leg dragging or hopping over that leg, the non DLR leg is so important. You need to be pushing on the knee, the hip, the chest, circling and breaking a grip, etc...you can't let them control that leg
I almost always play ankle and the sleeve opposite my Dlr hook. It allows me to pull them into spider attacks and Dlr/spider type of guard. If I get into Dlr without that sleeve grip I'll go collar and ankle and sit up, or ankle and near sleeve and sit up. 
Voted both of you up
Maybe not what you're looking for, but one thing I noticed Lucas Lepri did to everyone that he rolled with the last time he was in buffalo was that insteaf of controling the ankle, he grabed the pants with a spider guard type grip. It made it a million times harder to pass. I've played it some too and it's a great control grip.
The pants grip (a la Lo) is super strong.
Personally though, I really like controlling both sleeves, or ankle and far side sleeve and keeping that far side spider hook in. Controlling that far side sleeve makes the switch to RDLR very strong, and makes it difficult for them to stuff your distance control leg, or set up the knee cut at all.
I predominantly play double sleeve... I do move around to different grips depending upon what they're doing and what I think they're susceptible to. I've stated numerous times why I like to play dbl sleeve more often then others.... I think it's most effective against opponents much larger than you. There's simply a lot of opportunity for your opponent to get their bear paws on your legs and start dominating you.
If I play collar/sleeve my non dlr foot is often on their bicep.... I have specific details on how to really keep your foot on their bicep when you don't have any grips on that sleeve.
If they're over aggressive about stepping back or forwards I might do ankle or pants grip with either hand depending on which way I want to work towards their back.
Matthew Godden -Yes, Queixinho showed me this grip as well
Maybe not what you're looking for, but one thing I noticed Lucas Lepri did to everyone that he rolled with the last time he was in buffalo was that insteaf of controling the ankle, he grabed the pants with a spider guard type grip. It made it a million times harder to pass. I've played it some too and it's a great control grip.
GaspareBJJ -Matthew Godden -Yes, Queixinho showed me this grip as well
Maybe not what you're looking for, but one thing I noticed Lucas Lepri did to everyone that he rolled with the last time he was in buffalo was that insteaf of controling the ankle, he grabed the pants with a spider guard type grip. It made it a million times harder to pass. I've played it some too and it's a great control grip.
yes...you can also do that grip with either hand...and when you do it with the inside hand, you can just keep it after the sweep and use it in the pass.
Voted everyone one up!!! Thanks everyone