No LED bulbs on the market are bright enough to serve as a headlight, sorry.
Lexus LS600h, Cadillac Escalade, Audi A8 + R8 etc. have LED headlight instead of xenon headlight. BMW and VW will follow soon.
But until now, xenon ist the cheapest way to get the most light out of the legal restrictions.
To avoid blinding oncoming traffic, great care must be taken esp. with motorcycles. They lean/stop/wheelie much more than cars. I know only of BMW, who could legalize their xenon. Same problem would arise with strong LED headlight.
But for the Agility (HS1 35W originally in the states too?) I would first try a simple +50% ... +100% bulb. A 55W might make difficulties might overload light machine or reflector (heat!).