Lots have changed out just the bulb. I had originally done that as well. There are tons of options out there.
I was happy with the Cyclops bulb I purchased when I swapped them out.
But you can read through the many threads on the forum here to get an idea of choices
Like anything electronic, there are always new models and improvements made. I would have no issues going back to a cyclops bulb if I was looking at that route again.