I recently used a TI-86 loaner from TI. Results of interest: Table feature and text drawing are good additions. Programming is not 100% compatible with TI85. One reason: some order of operations changes. One big disappointment: programs run about 30% slower on the 86, as compared to the 85 (i.e., the 86 will be about 70% finished with its task in the time the 85 finishes it). Has anyone noticed this?