I have the same one. And a 3 inch. Got the 3 inch first, and a taurus 650. Both 357. The 3 inch for my trai gun and backup CCW, but liked the sp101 so much and happen to come across a 2 inch like yours, so traded the taurus for it.
I put XS front night sight on both, and was a HUGE improvement both daytime and night. I highly recomend it!!
You will love that sp101. Of all the revolvers i have looked at, the sp101 is just a well built tank. Maybe a bit heavy, but it makes the 357s standable.
Also on my 3 inch, i put rubber hogue grips on it. MAJOR difference in the hotter load handling. Night and day if i dare say. With the 2 and 3 inch and stock grips, 357 loads are not much fun for me. With the hogues, i can shoot it all day.
The 2 inch i am still figuring out what grips i want. Hogues are a little much for conseal carry. May just keep the stocks since it will mainly shoot 38s.