Conclusion
The RPS-10 moves HJC upmarket slightly, although my feeling is that the helmet isn't that much of an improvement over the FS-15, which I actually prefer -- and which lists for $219.99, some $129 less than the RPS-10. 129 bucks is a lot of money in my book -- enough for a nice pair of gloves or boots. I'm not sure the RPS-10 offers that much of an advantage over the FS-15 to spend the extra money.