I've got the original Tract Toric 8x42. I've also got the Maven B1 8x42 and the Maven B2 9x45. I've had them for a few years now. The Maven B 2 9x45 is the sweet spot in the B 2 series. I would not trade it for an 11x45, which a friend of mine has. The Tract Toric is where a premium level optic starts, IMO. I personally prefer the Maven, It gives me an image with better color and a little more contrast. I also think the Maven has a somewhat better build quality. The Maven binoculars have an understated fov spec, the 9x45 is listed at 7* and measures 8*, for example.
Either one would give me no pause if it were my only glass. My advice is to try both and keep what you prefer.
Both are Japanese, the Maven is assembled in San Diego.