360 pistons

Good day gentsssssss.my la 360 is at the machine shop, i am looking for some help on picking pistons. Keep in mind my budget is low.They are doing a stock bottom end rebuild, i am shooting for 20 over 9 to 1 piston,not sure about the KB heard lots of bad reviews,so can someone shed some light on what to get.this is not a race car build,but would like more comp,as we all know the 360 has low comp.The cam i have now is the comp cam 262,headers,edel rpm intake ,600 holley, thinking about 2800 stall and 355 gear 188 intake valve stock head.thats my cheep build.so what your thoughts. thanks its been a long time posting hear.