I live in the central San Juaquin valley CA, and peach wood is plentiful here (as well as a ton of other types of fruit and nut wood) and relatively cheap. I have used peach many times, and it is good.
From my experience, It gives a lighter smoke tase . I use it on my chicken and pork.
I use oak on a lot with beef, since it has a little stronger flavor, and I do like it on pork too. .
Honestly I can only taste a minor difference, but some with a more sensitive pallet than mine can really taste a big difference between woods,
It all Tastes good to me as long as is not a smoldering sooty smoke from poor fire management