Best? You will find that most people think theirs is the best, or worst. First, you can search the archive towing guides in Motorhome Magazine or the FMCA Magazine. A booklet section is published around Dec, Jan every year listing towables for the following year. You can also search the REMCO website, which will tell you if your car needs modification or is towable. You will then need a baseplate, towbar, lights, and braking system. There are many MAJOR players in the towing industry, and all have excellent reputations: Demco, Towmaster, and Blue Ox are the ones that come to mind. A reputable hitch shop in your area will probably recommend the one they keep in stock and are most familiar with...I see no problem with this. The same hitch shop will connect the towable's (toad's)lights to the motorhome. This leaves the brakes...do get a supplemental brake, really. Here it is your choice. How much towing will you do, how easy do you want the setup, how much do you want to spend. The removable boxes are least expensive (BuddyBrake), then the compact boxes, then the permanent instillations. I have a ReadyBrake, which requires no power as it is a cable activated by surge, however, the instillation can be pricey. It is so easy to use, and has no footprint in the cab.
Lots of good articles on towing in the Motorhome Magazine, and if you join FMCA (Family Motor Coach Association) their magazine is very informative. Membership in both is not expensive and good reading. Both offer perks (discounts) which I have never used. Probably most important is finding a reputable installer.
Best of luck on your hookup, and Happy Trails.