I am curious, what is the difference in X80AJ v/s X75K v/s K80K then ? How long do we keep getting updates? 

SONY INDIA - IT SEEMS APPARENTLY HAS HIRED THE WORST OF STAFF AT PR- DESK TO IGNORE CUSTOMERS  PLACING THEIR GENUINE COMPLAINTS.I AM INTO TOTAL LOSS WHEN I PURCHASED A 55 INCH MOST ADVANCED TV AND THEY COULD PROVIDE ANY MAINTENANCE SUPPORT INSPITE OF RAISING MY ISSUE TO JAPAN HQRS.THIS HAPPENED WHEN THEY HAVE ACCEPTED THAT REQUIRED SPARE IS NOT AVAILABLE GLOBALLY .EVEN GLOBAL HEADS IT APPEARS OR ON ON A DEFINITE STRATEGY OF CLOSING INDIAN OPERATIONS UNDER ABLE CONTROL OF MR.NAYYAR- CEO, INDIA

SONY INDIA - IT SEEMS APPARENTLY HAS HIRED THE WORST OF STAFF AT PR- DESK TO IGNORE CUSTOMERS  PLACING THEIR GENUINE COMPLAINTS.I AM INTO TOTAL LOSS WHEN I PURCHASED A 55 INCH MOST ADVANCED TV AND THEY COULD PROVIDE ANY MAINTENANCE SUPPORT INSPITE OF RAISING MY ISSUE TO JAPAN HQRS.THIS HAPPENED WHEN THEY HAVE ACCEPTED THAT REQUIRED SPARE IS NOT AVAILABLE GLOBALLY .EVEN GLOBAL HEADS IT APPEARS OR ON ON A DEFINITE STRATEGY OF CLOSING INDIAN OPERATIONS UNDER ABLE CONTROL OF MR.NAYYAR- CEO, INDIA

Sir you speak the truth & I ended up with a Q90A last year after a few attempts with some mid-range models. 

There's seriously no incentive for these large companies to improve, instead they're cutting costs for profit because most average users don't care.

Please, PLEASE don't buy budget or mid-range TVs from the larger companies/name-brands, none of them are good. Instead, look at TCL, Hisense, and Vizio. For example, the TCL 5 or 6 series, the Hisense U6G or above, and the Vizio M7 or the P series.

Any of the highest end TVs (LG C1 and C2, Samsung Q90, etc.) are great, though, because of course they are.