SGS is at the end of its life cycle and yet I have not found a rom that is truely stable without issue.  MIUI is smooth but the battery drain is just not usable.  Other roms are all about the same and still lag and slow.

That is why I will not buy another Samsung phone again.  Just look at how many galaxy phone is release the last 6 months....its almost from A to Z lol.  Samsung is good at making new hardware but its software leave much to be desire.  With so many different hardware out there , their software team just cannot refine its software. 

I'm going the IOS way.

Me and a friend of mine try  a couple of Galnet MIUI we both have to switch to other rom because the battery die out too fast.  Eventually my friend trade off his SGS for an iPhone 3Gs and he seems more happy with its performance.

I have been flashing rom every now and then, and they all the same.  Slow and laggy after a while.  I remember I bought my ipad more than a year ago and I have only upgrade the firmware once and its been serving me well till now.  See the difference?