Inferior product? I have to laugh at that. My 627-5 Pro with IL has not provided any evidence that it is an inferior product.
S&W isn't the only gun maker that has an internal lock. Some Ruger revolvers have an IL under the butt grips rather than having the hole on the side. I have yet to have an IL failure with any brand revolver shooting over a thousand rounds.
I agree with post #9.
I also agree many of the older high quality pre lock S&W revolvers can be bought for less money than a new IL S&W. I also think some older S&W revolvers are inferior to my 627-5. Again back to post #9.

I place the IL and mim parts in the same box of I don't give a rats tail about either one. I have yet to hear of any S&W recall involving either one. I have read more problems with canted barrels or cracked frames on S&W guns than complaints of IL failure.
Again refer back to post #9.