I'd recommend reading this: http://www.livestrong.com/article/107367-dumbbell-press-vs.-bench-press/
When I started with gym it was just more "natural" for me and I felt a lot more gains by doing dumbbells benchpresses. Not mentioning the fact that I wouldn't need a partner to spot me if I was in trouble.
I was thinking of changing things up too recently so this came at good timing. I don't use a spotter so I think I may try the dumbbell presses. I'll probably have to go down in weight some due to the fact that the bar is easier to stabilize. I may try these for a bit and add some plyometric pushups and see if I like it.