Meaning of -NV-AV marking in TDS5054B scopes

[minatko]

Hello everyone.
I'm going to buy one of these scopes and I see some of the offers have -NV-AV suffix added to the title.
I tried to read what this can mean but I just came across some contradictory statements.
In one thread on this forum a guy said that this means record length reduced by half, but there definitely are so called "options" like Opt 1M determining the length.
Tekwiki says -NV means the scope lacks a touch screen, but again there is TDS5BUP Option 18 adding the touch screen.
Does anyone know what does this suffix mean exactly? Or at least which one is better with or without the suffix?