Like others have said, the Weatherby Vanguard 2 are Howa 1500's... but with better stocks, IMHO. Out of all the rifles you listed, I believe the Vanguard/Howa is the best all around rifle (coming from a Ruger fanboy). These are my opinions based on experience/observations:
I think price-wise, most Vanguards are below the Winchester class of rifles, but on par with quality. Winchester does have Controlled Round Feed on most new rifles, if I recall... unlike the Vanguard/Howa. On a side note, both manufacturers have ties to Japan and Turkey so welcome to the global economic world...
The Vanuard does not have as buttery smooth of an action as the Remington, but no guns really do. Both are Push Feed Action, but as a former-Remington-lover but current-Remington-owner, I will probably never buy another Remington. I never heard of the Vanguard/Howas being as picky as my Remington seems to be with ammo and you do not have to worry about the decade long Remington trigger recalls. The Remington does have an excellent aftermarket though.
The Ruger is Mauser inspired similar to the Winchester with CRF, etc etc. The Rugers are tough and great shooters, but in my experience veryyyy heavy compared to similar models of other manufacturers. Price seems to be similar to the Vanguard depending on market.
Again, this is just my opinion. When I am in the market for a new bolt rifle, I will start... and probably end... my search with the Vanguard/Howa series of rifles.
Edit: Here is a link to an article by Chuck Hawks on the actions of some rifles.
http://www.chuckhawks.com/finest_bolt_actions.htm