People who have upgraded from a cheap hybrid bike to a mid range road bike, did you get noticeably faster? Did it feel different?

Just daydreaming about the day I can afford an actual road bike. Right now I ride a 34 lb hybrid bike that I got for about $400 at a local bike shop and average 14.5 MPH on most rides. Anyone have experience switching from a heavy hybrid to a decent to good road bike? What did you upgrade to? Did you notice a difference in speed or feel? Like I said, just daydreaming about the day I can do this myself!