Nesy I cannot help but say that choosing between 80 and 84 is VERY different from 70 and 74. While 70's and 74's don't have much of a big difference, 80 and 84 does. You will almost always lose to that 95k health 84 twink as a level 80 (with your 35-40k health) and to be honest, from my experience that "feeling of being "right"" does not really exist unless your character was a WotLK player (which is not this guy's case). I have played both brackets and I'd say go 84. However, just to be safe, go 80 first and then see what it's like - you can always change your mind and go to 84.