Bosch created the o2 sensor in 1974 for Volvo..
their sensors work. Bosch makes o2 sensors for Motorcraft as well.
There's no glory in using a bosch over an ngk or denso or Walker.
However, I have had more issues with Bosch pertaining to pricing and availablilty of sensors for various models (usually japanese and korean imports). Bosch seems to only make sensors for european and domestic cars moreso.
Personally speaking, an o2 sensor is all the same. it's the stinkin' connector that jacks the price up to outrageous pricing.
I'm more into the Denso o2 sensors nowadays because they seem to have their act together.. they have sensors for all cars, and they're reasonably priced as well as OE for imports.
the NGK or rather NTK o2 sensors are very good, however they don't have a large range in terms of models. I am a HUGE fan of NGK plugs, wires and their sensors.
I used to despise denso, but they've come a very far way and their quality is at top of the par. especially with their starters and alternators.