Well lets see im a Colt Ruger guy so i can recommend a
Ruger Police/security/speed six for a good used cheep wheelie
Or a gp100 or a sp101 all good guns..
For colt ya have to go used but the trooper or king cobra are nice now if ya got lots of $$$ a Python is as good as it gets
I know about squat about smith wheelies really so i cant off anything there but theres plenty of smith fans round here and they will pipe up and give you some ideals..
Then ya got the question of 2" 4" 6" i like a 6 inch for target shooting 4 inch if shooting 38's 2 inch for really concealed carry with 38's
Course i carry a 1911 most must this is just my 2$ worth