Buy it, enjoy it, the servers shouldnt be an issue soon enough. And also, did you like it during Open Beta, if you didnt really like the game i suppose you can wait a bit, however i suggest buying it now anyways WoW truly a great game.
Good to hear they fixed the lag. I enjoyed the beta overall, for the 4 days I played it. As long as I don't have to wait 2 mins everytime I loot a corpse, I'll be happy.
Haha, no the lag problem stopped fairly quickly and I haven't come across the loot lag/bug thing in awhile. (There were a few mining points that would get you stuck in loot position until you logged out or looted something else.)