The entire Yorkville line is really great. The model you are looking at is a nice combination of features vs. size at a nice price. The single 15" speaker puts out a nice, full range of tone, while the horn adds the "sizzle" to the top end for clarity. I have always liked the EQ points that Yorkville uses - very musical.
If compared to other amps in it's size, I'd prefer the KB200 over the Roland KC100&300 and the Peavey KB150. Both Roland and Peavey offer better amps (KC500 and KB300a) but they are larger, heavier and more expensive.
I think for the money, if mono is what you want - that Yorkville is a winner.