I bought these from Amazon, 30 bucks Canadian. Id say about 3 times brighter than the factory halogen fog lights. I upgraded my lows to 70 watt hella halogens as well, it's a huge improvement over factory with both lights upgraded.
I haven't had anyone high beam me yet with these on for close on a year, a lot of night driving. I find they light up the sides of the road really well. And 880 bulbs fit the housing the same as 881.