Your style of hunting should be a part of the deciding factor in the decision. If you are stand hunting you will be well served by any of the ones you mentioned. If you are going to be carrying the rifle then the Tikka T-3 would be the best choice IMO, It is lighter than any of the others you have mentioned, both the Howa actioned Weatherby and Bergara are fairly heavy rifles.
As far as accuracy - Tikka hands down, I have yet to own or see one that did not shoot sub-MOA out of the box with no tweaking whatever. Their action is amazingly smooth, they feed better than any other off the shelf rifle, if you want a lighter weight of pull all that is required is too simply back out one screw.
I own a couple of custom guns, a few semi-customs and a smattering of Remington, Winchester's, if I ever get down to one rifle it will be a Tikka T-3 stainless/synthetic.
drover
