Samsung support / upgrades
If Samsung's ongoing 'support' for this phone is anything like that for the i7500 Galaxy (one unfortunate gullible owner writing....) then steer well clear of this.
For the i7500 they've not released any major updates or bug fixes, so the phone is stuck with the version of Android (1.5 in the i7500's case) that it shipped with and as a side-effect in most cases the versions of the applications that it came with because Google also don't seem to be doing many bug fixes for software on previous versions of the OS.
A hardware show-stopper for the i7500 is the appalling standy-time, often less than 24 hours! - can the reviewer test what actual standby time you get out of this Galaxy S once it has been hooked up to your google acount and one imap account with the default sync-settings for mail and calendar etc.
Example software issues are numerous - e.g. android issue 1128 "Email app should allow moving messages between folders" has been open for close to 2 years. In conjunction with the delete-mail button being near to the corner of the screen and having no 'confirm/cancel' confirmation - this makes the imap client unusable : once you've accidently deleted an important email with no confirmation or 'undo' you'll never want to even open the application again.
The most bizarre example of their incompentance was shipping the i7500 with a CD in the box containing Samsung's "New PC studio" software that didn't support the phone : At least it sounds like Samsung have done better with this one.