Joined: Feb 2013
Posts: 1,472
Likes: 11
From: Near St. Louis, Missouri
Bikes: Giant Defy Advanced, Breezer Doppler Team, Schwinn Twinn Tandem, Windsor Tourist, 1954 JC Higgens
I bought a standard B-17 for my road bike last year. It was great, but not perfect especially when I get down on the aerobars.
Therefore I bought an Imperial a couple of weeks ago and it makes a positive difference. I must admit to reaching under the saddle and could feel soft tissue pushing down into the cutout. So if you are down in the drops a lot, the Imperial might be the best bet.
BTW: I put the standard B-17 on my more upright touring bike. Win-Win.