The Philips LED 4W GU10 is a worthy successor / replacement for the older halogen version !! With 4 watts are the exact same amount of light from which one was used with a 35W halogen.
The light goes on immediately (wonderful!), And appears in a new white light, fresh and in my opinion better for your eyes than not the old yellowish tinge of halogen technology!
Absolutely no heat, everything is cold, even after hours of use: installation in sub-structures (or close to sensitive devices / objects) thus perfectly !!
Hopefully keep these LEDs to long enough to recoup the purchase price !!
Today is March 17, 2014, exactly three months after the purchase of this lamp .... it's broken, no longer burns !! So, as soon halogen headlight is me garkein broke .... 3 to 4 hours per day in operation, that was all, so nearly 3 months in operation !! Nah, that is not an option, for the price ($ 9.95) can not talk of saving one ... am disappointed !!! Really !!