I wonder if anyone has a recommendation for a good aero TT type helmet. In an event I competed in today, most were wearing Louis Garneau Prologue helmets. It looks like a damn good helmet, and has a front visor. Anyone know of any better choices, and where to get them?

Also, if you Garneau wearers happen to tune in, I wonder how you find sizing to be compared to a Giro. If I am reading the figures correctly, I would take a small in a LG even though I comfortably wear medium in both Giro & Specialized helmets.

Thanks for your input.