Running CEC (Korea) H7 halogen 70W lows and PIAA Xtreme White 9005 highs. CECs last--first set of 55W are still good after a year. Thinking PIAAs were better, I pulled 'em. PIAAs sucked. Pattern was terrible, focus nonexistent and they couldn't touch my CECs in any area. PIAA claims on the package 55W-->110W. I said to the vendor 55 watt-->110 what? I told him to put 'em in his '5 and get back to me, but refund my money. CEC 55W lows replaced with 70s for greater reach.
CEC's cost about 700% less than PIAAs and 400% less than SSs. No going back on the low beams--terrific spread, great focus and more than ample light. Next move is HIDs. Period.
And as I said elsewhere, stay the hell away from 100W+ stuff--110, 120, etc. You could find yourself like the M3 owner who pulled into my dealer couple of weeks ago with LH housing back half melted, RH housing badly warped, blown relay, and burned wiring and harness. Cost: $1480+ and no warranty. Non-stock wattage bulbs.
Be careful.(no)