I own both a 29-2 and a 629-2 Mountain Revolver.
I shoot the 29-2 a bunch more just because it is what I carry as I did not want to put sights on a mountain revolver and beat the hell out of it in the back country.
I can't tell any noticeable difference in recoil between the two with my loads which consists of a 240gr Hornady XTP running at 1170fps, or a 240gr LSWC going 1100fps.
If I were looking to buy one of the two today I think my decision would be made by which gun I can find a better deal on used. Most of the .44s I come across used have been shot very little either due to recoil or ammo cost for the non reloaders.