Depends who you are and what you want them for, but in most cases, probably not. I recommend the HRs because the pillow balls are fabulous, but that being said, the HSD TT's (new version of the HS), are great for street use, and seeing as you'll never see a circuit, they'd be just fine.

Hell, even if you did wanna go on the track, I doubt you'd even find the limitations of them.