personally, i like the micarta grips and a fluted cylinder. i would not spend money on the inverted crown unless the factory crown got damaged somehow and i would not buy a 45 colt cylinder since i reload and can load 454 brass to whatever power level i need. Also, i never found a good way to carry an extra cylinder. 45 colts can be fired in the 454 cylinder in a pinch as long as you clean it well afterwards.