Two LOGO dialects are compared for appropriateness for use with second, third, and fourth grade students on the basis of 18 months of experience with teaching LOGO programing language at this level in a four-machine laboratory setting. Benefits and drawbacks of the dialects are evaluated in the areas of editing. screen modes, debugging, vocabulary, instruction manuals, typing and syntax simplicity, automatic retyping, speed of drawing, ability to save and load binary picture files, remark facility, and workspace management. Specifically discussed are the MIT 'TRACE' and 'SAVEPICT/READPICT' commands and the Apple 'PACKAGE' and 'BUY' commands. The Apple and MIT LOGO programs are then rated using the criteria named above and a factor weighting system. The MIT Program is more highly rated overall, though the Apple program is rated higher on screen modes, extent of primitive vocabulary, the 'BURY' command, automatic retype (for CONTROL Y), and speed of drawing. It is noted that the final decision, based on the weighting and intuition of the researchers, was an extremely close one. An update from July 2, 1983 describes procedures for an 'ED ALL' capability to edit entire workspace in Apple LOGO. An update of February 1984 incorporates new experience with a second version of Terrapin LOGO. (LMM)