IMHO - SM/VE dual spec gives vampiirs the most versitality. Not sure of the exact numbers on the spec, but I can get that for ya if you need. As AM/VE spec you will get up to the yellow HOT and claw as well as detect stealth from VE... not much need in taking pierce up to 43 IMO either. You will get speed, HOT, claw, see stealth(combined w/ SOM and other SL arts to be uber stealth detector), and all the pierce styles needed (seeing as how claw is what makes a vamp really deadly, not styles)... full SM is great for PvE and leveling your friends in the DL instance up to 50 though... up to you, depending on if you like RvR. There are many good specs for vamps so what I or anyone else says is "best" may not work for you, but we'll try and help.