I purchased a R15 DirecTV TIVO receiver from Circuit City last weekend. Circuit City was out of the R10 and showed me that the R15 has 20 hours more of recording capability. I quickly learned that the R15 does not have the TIVO menu's and formatting. In some ways the R15 menu's are simpler and some ways they are more cumbersome. I have the option of returning the R15 and getting the R10. Anyone here have opinions between the two? Also, will DirecTV continue to release upgrades for the TIVO format units? Thanks.