What are my options.

So I bought this car a while back and have never got around to replace the headlights. Since one of them burnt out and the other is on its way out I need to replace them.
While I would like the stock headlights back I don't know what would be cheaper.
So this is the shitty system that the previous owner put in. What are my options?
http://i.imgur.com/N81HQfd.jpg
http://i.imgur.com/dkzCOOg.jpg
I could leave it how it is and replace the bulbs?? Or try my luck at converting it back to stock?? Or even put in an all new system??
I've never really dealt with headlight retrofitting or any of that so I'm in the dark on this one.
While I would like the stock headlights back I don't know what would be cheaper.
So this is the shitty system that the previous owner put in. What are my options?
http://i.imgur.com/N81HQfd.jpg
http://i.imgur.com/dkzCOOg.jpg
I could leave it how it is and replace the bulbs?? Or try my luck at converting it back to stock?? Or even put in an all new system??
I've never really dealt with headlight retrofitting or any of that so I'm in the dark on this one.