The "Vaquero" is based on the same 44Mag-size frame you have now, and will feel similar. It can also take rockin'-hot loads same as your gun. If that's what you like, cool.
The Ruger "New Vaquero" is built on a new smaller frame, similar in size to the Colt SAA. The grip frame is also reduced likewise.
It is NOT as strong but it's very well built in terms of fit'n'finish. On average these appear to be better-made guns than any prior Ruger SA, showing good accuracy and fit. Ruger altered their manufacturing techniques a bit. Mine is a 357 with modifications:
Mine is getting slowly turned into a "street creature" CCW SA.
As you can see, a lot of parts from the previous larger frame series can swap over to the New Vaq, such as my SuperBlackHawk hammer. Other hammer/trigger group parts fit, and the entire grip frame can be swapped to Bisley, SuperBlackhawk, Bird's Head or XR3-RED (standard Blackhawk) as long as they're "new model" and you also swap the mainspring, mainspring strut and mainspring keeper.
Ruger also fixed the New Vaq cylinder bore alignment issue with the loading gate - the "click" now happens right as the bore lines up with the gate.
Base pins on the New Vaq are shorter but Belt Mountain is already making them. Grip support for the new smaller grip frame is already in evidence among several makers.
The Taurus Gaucho is "sorta the same gun" as the New Vaq, as it's also Colt SAA-sized and has a transfer bar safety. I believe the quality of the Ruger will be better and I know for damnsure that the possibilities for parts-swapping and tuning the feel of the New Vaq will greatly exceed the Taurus and the other transfer-bar SAA, the Beretta Stampede.
I would keep the gun I've got for high-power loads and get a New Vaq for fun.