I think I would strongly look at a Vanguard over any other rifle but a Mark V. They incorporate a couple features and specifications not found on a regular Howa. They are proprietary to the Vanguard. They now have fully adjustable triggers and some have pillar bedded stocks.
<font color="blue">"The action incorporates many features of the Weatherby Mark V® action. For example, the one-piece forged, fluted bolt has three ports that allow high-pressure gases to escape in the event of an accidental case rupture. The bolt sleeve completely enshrouds the rear of the action to provide protection from high-pressure gases and brass particles, should the case rupture."
"Weatherby guarantees its new Vanguard® SUB-MOA hunting rifle to shoot a three-shot group of .99 inch or less at 100 yards when used with specific Weatherby factory or premium (non-Weatherby calibers) ammunition."</font>
You can read more about the differences here.