I was looking for Jim Ruos's Caribbean Islands Travel Service on the SXM sponsor page, but couldn't find it. He has an FB page - we have used Jim's service and would definitely recommend. He is very helpful, especially regarding the OB area.
I don’t have much knowledge of Frenchside rentals or rental agents/rental companies, since we own timeshare and stay mostly on the Dutch side of the island, but one thing I will say as a long time member here, is that in all my years as a member and in all the thousands of posts I’ve read in those years, I can’t recall EVER reading anything negative about Mr. Ruos’ company or services to his clients, and that, to me, is astounding. And as an added reality, I wouldn’t know him if I was sitting right next to him, lest anyone think I’m plugging a friend. I’m sure there are other good rentals options, too, but the lack of negativity regarding this company speaks volumes to me.