Both. I find the slightly different (and overlapping) attributes of both the medium & large bore revolvers offer me versatility.
I'm no longer the avid reloader of my youth, though, and don't shoot my .44's as much as I did as a younger revolver shooter. It would be different if I were a hunter (but I'm not).
In the revolver days of my former agency the .357MAG was the issued caliber, but .44 MAG was an authorized optional duty caliber (along with .44 SPL, .45 Colt & .45ACP). I knew a lot of guys who carried them (and a gal who carried a .45Colt revolver). Back in those days (70's & 80's) it wasn't unusual to find police officers and deputy sheriffs carrying .44's (or .45's or .41's). I didn't want to spend the money on the Buscadero rig many guys used for uniform duty, so I never got around to carrying one of my .44's on-duty (wanting to spend my gun money on other things), but I did carry one or another .44 off-duty quite often. I eventually changed from Magnum loads to Specials in my revolvers, though, and later didn't feel like concealing the larger .44's anymore (IWB of a Redhawk or N-frame gets tiresome).
I have more remaining .357's than .44's.