Well, the path that you really take depends more on you. There is not really a advantage or disadvatage to what path you take, take the druid for example. The HoT path can help you as a healer, but the DoT path can help you solo as was i when i could solo a tea garden guard at lvl 30. But i suggest that you stick with one all the way until you are 49 because it may become "stronger". As for a wizard yes, i would probably go with the power path as to they need power for their nukes. As for strategy for a wizard i would put my base points into intelligece as primary then i would go with the second power pool dextirity, and finally even tho some ppl would disagree with me i would go with stamina because that way if the tank is not able to hold the aggro at high lvls (it can keep you alive with just a couple hp at IoD in some cases). Hope this helps.