Back in 2010, we had a black RT-S & the matching BRP RT622 trailer. As others have mentioned, it is a great combination.On a 2400 mile road trip from Cincinnati, Ohio to Florida, the RT handeled the trailer like it wasn't even back there. Found myself frequently checking the mirrors just to make sure I hadn't lost it, it was that smooth. BRP did a fantastic job with the independant suspension on the trailer. My only wish is that they offered a "Camper" option with the trailer. If they did, I wouldn't even consider any other trailer or camper, as you couldn't beat the complete set-up offered from BRP then, of course, IMHO.
Since we traded the 2010 RT-S & Trailer, we now have a Moto-Mate Camper to go with Teds Red Sled. And even tho Im happy with the Moto-Mate, it just can't compare to the RT622 trailer when it comes to handling. In all fairness, the Moto-Mate is roughly the same size as the Spyder & it only has torsion suspension (none) but it serves our needs well.
With the BRP trailer, we averaged about 24-27 MPG'S, down about 2-4 MPGs
With our Moto-Mate, we're averaging about 22-24 MPGs, down about 4-8 MPGs
If you just need extra storage space, the BRP RT-622 is hard to beat, especially with the good deals that are out there to be had.