My first revolver was a 6" stainless Ruger SecuritySix .357Mag. Currently I have a 4" S&W Model 28 and a 4" S&W 581, both are 357 Magnum. I think you can see how this is going....
Any quality .357 is worth having...I have to force myself not to pick up a K-frame Smith [although I wouldn't shoot it too aggressively] or another Ruger, and I'd happily look at a Colt if one came my way. I'm not too familiar with Taurus, but the few I've seen looked decent for the price.
.44 Magnum, same deal but they will be somewhat more expensive to shoot. Few things in life [shootingwise anyway] are nicer than a large-frame revolver firing moderate loads.
Bottom line...my favorite revolver is the Mod 28 Highway Patrolman. They are available with 6" barrels for all you non-grandfathered types, and definitely a prize, what with their pinned barrels and countersunk chambers, wide triggers and hammers.