I've had both guns (older pre-MIM Mountain Gun). Found them both obnoxious to shoot - and yes I have lots of other magnums that I enjoy including .41, .44, .454 and .480.
At least with the Model 69 you are getting a lighter weight revolver, if you are carrying it way more than shooting it. Changing the awful factory stocks to something more cushioning helps.
On the other hand, the trigger pulls on my Model 69 and every one I have examined were subpar: very heavy DA and creepy/heavy SA. The matte finish with contrasting dull black oxide hammer and trigger, is also visually unappealing.
The trigger pulls on the N frames, including the current production versions, are much better, as I S&W views the Models 29/629 as their premium guns. The finish is better as well. With all the problems I see weekly with current production S&W J-K-L frame revolvers, the N frames are usually good to go right out of the box.