I have the galaxy ace and i don't rate it really. The storage is awful. There is too much stuff on the phone storage that you can't remove. If you then download an app it takes up way too much space, even if you have saved it to the memory card it takes up room on the phone.
I am having problems with the notification tones. If i have the alert tones on then every time i get a text and email i get notified - that fine. But it also goes off if people post on Facebook and also play Words with friends with me. But if i don't want to get the Facebook/words notifications then i can't get the text alerts either.
Also - with the wifi, if i have it turned on and we go into an area where there is an open wifi available then it turns the 3g off but it can't always connect to the wifi.
I also can't have all my music on my phone which means that i have to carry my phone and iPod on me.
I am getting an iPhone next time.