Salman Sooraj can be in race of all time combo.
But in current times, no, the fact that Sooraj Barjatya has no credibility among recent times and he's not in contention of top directors.
Biggest combo currently is without a doubt Rohit Mass Shetty and Ajay Class/Mass Devgan.
Aamir-Raju, srk-adi/Kjo and HR-Rakesh are combos but they don't have movies together in recent times, the last movie among these combo was 6 years ago and it doesn't seem that they are going to be repeated in near future.
Whereas Rohit and Ajay are not only churning movies at consistent basis but will continue to do so in future too. Infact most probably next 4 Rohit Shetty movies will have Ajay Devgan in them.
I'm gonna puke typing this but Desi Avengers.