I want an accurate .22 pistol and am thinking about buying a Ruger MKIII. Should I buy the S.S. Hunter with the 7" fluted bull barrel (model 10118) or the S.S. Competition with the 7" Slab side barrel (model 10112)? What are the major differences between the two, price is about the same. Please let me know if there is a different model and/or manufacturer you recommend. I would like to stay under the $500 mark.