Never fall for pretty wood. I can show you worthless wood that is 10x more attractive than the Rigby photos. Studying wood structure is like finding flaws and grading precious stones. It takes training, but that training is the difference between $300 wood and $6000 wood even though they have an identical aesthetic. You need to assume wood is going to crack and then look at where/how under stress of recoil.
Only one of those 6 rifle's stocks is "excellent" wood and it happens to be one of the less figured pieces. You're looking for a gentle curve of the grain structure flowing through the wrist, not straight grain running parallel through the wrist. You also don't want straight grains running due south of the tang and safety, that's a weak spot and where recoil forces are likely to split the wood.
