The stam templar is currently OP damage wise. It has been before and got a nerf. It will get a nerf again. Overall, stam templar is not a well designed class. It does not have a wide variety of useful skills on both the offensive and defensive front. When it is no longer OP in damage it will be garbage because, like stam NB, it is a poorly designed class. Mag NB's are a well designed class. Even when they are not putting out great max damage they still have a good mix of useful abilities. They are a well designed class and I think you would ultimately be happier with that.

I don't know who told you sorcs don't work well though, both mag and stam sorcs are very well designed and effective with mag sorcs also doing top notch damage. Warden's lack top end PVE dps but are killing it in PVP and have a lot of balance to what they do as well as huge group support. Stam blades and stamplars are actually my two lowest rated builds in terms of overall design. Unless you are straight up endgame raiding (in which case you need a full stable of toons so you can switch to the flavor of the month) I would avoid them like the plague.