I guess more or less the same.
Just the warranty coverage different only, which Thorus gives a lot more benefit in warranty.

*#06#

*#06# is standard for all phone
for SE phone u can check tat from the service menu too
eh, the aqua one quite nice eh...too bad cannot support mandarin character
GW :
1) always get the latest firmware first
2) no chinese support
3) appears to be the less problem most of the time

SG :
1) Full Mandarin character reading and pinyin input
2) Lunar calendar
3) no white border on handwriting
4) slow handwriting recognization due to the ability of recognizing a phrase instead of a word
5) no anti-aliasing on fonts

HK :
1) Full mandarin character reading + pinyin/stroke input
2) Lunar calendar
3) no white border on handwriting
4) Slow handwriting recognization due to the ability of recognizing a phrase instead of a word
5) no anti-aliasing
6) File in phone's flash memory are in Mandarin

u will get used to it in a very short time eg. one week. trust me.