We used to reserve "kit gun" for .22s and .22 magnums only.
I am considering the SP101 in 3" or the S & W 60-15 in 3" with the hi-viz sights. Have you shot yours yet? With magnums? Let me know what your experience is.
The SP101 is heavier (which is both good and bad) and cheaper (which is good). I've always been a S & W guy, so switching sides would represent a trauma.