The '+30' bulbs like the Philips premium or vision plus don't seem to run any hotter that I can tell - they are the same wattage but have the filament repositioned for more usable light on the road. The blue bulbs put out LESS light (yellow wavelengths removed). Get the Philips or Hella Premium '+30' in this country at http://catalog.com/susq/hella.htm
, or Vision Plus from a UK or Mainland Europe country store such as http://www.fosmo.com/
. Good luck ( I have been running the +30s with no problem for a year now).
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E