I recently got a Galaxy, not because of an irrational hatred of the iPhone but because I want to write apps for my own personal use and I don't have a mac. Generally I like the Galaxy and didn't expect it to get an update to 2.0 (though it would be nice!) but it seems to have been rushed out despite the delays. These are the issues I've had so far:
1) APs not setup out of the box so web browsing, email and MMS didn't work initially
2) The software supplied on the included CD doesn't work with the Galaxy, it won't update the firmware either
3) The only way to update the firmware is by taking it to a Samsung service centre. When I contacted my nearest one they said they couldn't guarantee to do it while I waited so it was better to leave it with them for 24 hours. Even better they couldn't give me a replacement phone in the meantime. How many people can afford to be without their mobile phone for 24 hours, especially when it's needed for work?
4) The Market icon is missing from the menu meaning that I can't install additional apps (I know it's possible using the SDK and the app's apk file but they can't honestly expect Joe public to do this). After Googling it seems that the firmware update may fix this but Samsung support couldn't confirm this and since I can't get the firmware update at the moment anyway (see above) it's a moot point.
Despite this I do quite like the phone but maybe I've just had really bad ones in the past. It does worry me though that manufacturers won't update these phones and that many new apps won't be available because they've been written for a newer version of android. I had assumed that since the Galaxy runs vanilla android it would actually be more likely to get an update than the customised HTCs, how wrong I was.