User experience difference among Nexus S and Samsung Galaxy S Currently, I am considering 1 out of the following 2 android phones.


Samsung Galaxy S
Nexus S (Not available in my country yet)


I was wondering, has anyone used the above 2 android phones before? What is the significant difference of these 2 phones, in term of software and hardware?

p/s Is there any online store where I can buy Nexus S from if I decide to have one? I am from Malaysia.
Hardware wise, they are almost identical (at least to some of the US versions of the Galaxy S) but there are some differences

Some of the differences are:


The Galaxy S has 3 hardware buttons (Menu, Home and Back), the Nexus S has 4 (Back, Menu, Search and Home). These are the buttons below the screen.
The Nexus S has slightly curved glass 
The Nexus S has an NFC chip
The Nexus S DOES NOT have a microSD slot. 
The Nexus S has a Flash for the rear 5MP camera
The Galaxy S supports Bluetooth 3.0, Nexus S, Bluetooth 2.1


In terms of Software:


The Galaxy S uses the Samsung RFS for a lot of the file system, the Nexus S uses EXT4


EXT4 performs a lot better then RFS does

The Galaxy S runs the Samsung TouchWiz 2.2 (Froyo) modified version of android, the Nexus S runs "Stock" Android 2.3 (Gingerbread)


Here is a screenshot of the i9000