your problem with your hefe's (is that the problem?) may be with your grist and mash regime, pitching rates and fermentation temps etc. rather than your yeast selection.
Otherwise, look at experimenting with Wyeast 3333-German Wheat if Wyeast 3068-Weihenstephen Weizen isn't ringing any bells...
I go by the rule of Fuggles for dark beers and bucket loads of EKG for flavour and (loads of) aroma in pale ales.
I think every time I make a pale ale, i wished that I'd added more EKG at flameout.