Update Path - Should I continue after the ota?

Alright, I got the OTA this morning. seems to work better so far. Nothing fantastic, but then again, I haven't used it much. Now the only reason I am stock unrooted is I got a replacement phone last week, and figured what the hell, I'll wait for the official update. Now that I have it, are there any of you out there who have applied 5.7.893 and 5.8.894. If so, does it change much? Can I do this while stock? And last but not least, can I root on 5.5.893, after the update?