Part of a review from an Amazon customer regarding sound on the HP model -
If listening to music through the laptop's speakers is your only option then you might as well cut off your ears. I'm sure it will sound better played through an external sound system - it couldn't fail to - but for me this isn't an option. The sound on my previous laptop wasn't exactly great, so my expectations were not too high, but this machine managed to limbo beneath the bar.
You can read more reviews for the HP here enter link description here
Personally, I like Acer. We have 3 Acer's in the family and not had any problems, one of which is 8yrs old.