I just looked at one of the T-3's last weekend and from what I can see there are 2 differences. First the different action. The T-3 has a one size action fits all calibers a/c of a "spacer" that they can vary from one cartridge length to another. The other, in the sythetic, is what appears to me as different materials. Personally I prefer the regular Whitetail Hunter. It feels better to me and I think it comes up to point of aim better. And it seems, in the states, that it is getting tough to find whitetail hunters . . . which would make me want to get one even more. I have had one for several years in 243 and really like it. What caliber is your wife looking for? I would imagine somewhere inbetween the 7mm and the 243.
long