I recently bought a used 741. It is a nice gun. I looked at the sp101, especially the 4". I have a GP100, and a 44 Super Redhawk, so it would have rounded out the collection. The sp101 like most Rugers is very solid(heavy). It is also a bit pricey, and I only wanted the 4", which may not still be offered.
I held off for a bit, and found the 741 at a gun show for $200. SOLD!!!
I have only had 1 shooting session this winter and have much ammo loaded. I can't wait for spring to shoot and chronograph. The Rugers are superior for hot loads, and most postings elsewhere are about hot loads. I am after 32 long velocities, so the Taurus is fine. I hope you don't have to buy factory ammo.
The 32 is indeed fun. People get a bit macho with their big blasters. The older I get, the more I enjoy the small stuff. I also light load my S&W model 60-4 3" with 100-125 gr light lead loads. Glad to see some other smallbore shooters.