The 360 doesn't have all the bells and whistles of the Tivo/V6, however I never used most of them so don't miss them, and unlike a number of users on the forums I'm happy with the switch to 360.
Here's a list of the main differences between the boxes :-
It isn't possible to transfer any data from the TiVo/V6 box to 360. This data will also be lost during the upgrade process for existing customers. So you will lose series links and all recordings.
The radio channels no longer have channel numbers like on the Tivo/V6. On the 360 you press Home and then highlight Guide; you'll see a shortcut to the radio app available at the top right of the screen. There is also a short cut to the most recently used radio stations at the bottom of the Home screen (this won't be populated though until you've listened to a few stations) Alternatively, you can use voice search and say "radio", or "radio1", "radio2" etc.
The 360 carries the BBC Sounds app, and also the RadioLine app which carries hundreds of extra radio channels.
The 360 does not have a wish list however you can search for something using voice (e.g. "Movies with John Wayne") and then manually save the result to your Watch list.
You can't filter by HD channels, although you can set up a Profile and just list HD channels on that profile.
Each 360 remote pairs 1 to 1 with the box, it does not use infra-red (IR). This means you can only use one remote with a box and not multiple remotes, although you can use All In One remotes as additional remote controls.
The OneForAll URC1240 measures H22, W4.4, D2cm compared to the OneForAll URC6820 which measures H17.4, W2, D4.8cm.
Although the URC6820 is smaller than the URC1240 it does appear to have larger buttons. The URC1240 and URC7125 are both available from Amazon, and slightly cheaper than from Argos. You should also be able to return to Amazon if purchased from there and not suitable.
To set up the OneForAll URC7125 - use the SimpleSet setup process and choose Ziggo manufacturer. To set up the OneForAll1240 enter the code 1582, It needs direct line of sight to set it up.
I can also use my LG Smart Control to control the TV360. (I set it up as a Ziggo device and then Ziggo Mediabox Next ( Ziggo is the name used in Holland by Liberty Global (VM's owners)
Sadly there is no undelete feature. Once a recording is deleted you will not be able to retrieve this recording.
You can select which series you want to start recording from in your series links, the box will record everything from that point onwards. The recording of repeats when a previously recorded program has been watched and deleted no longer occurs.
The 360 will record content in the definition of the channel you setup the series link on. If you want HD, ensure you check the channel details when setting up the series link and don't select the SD version
You can't set future recordings, ie those that aren't displayed in the EPG such as the next series of Doctor Who.
360-series links can only be set where a programme is currently in the 14-day EPG, a TiVo SL can be set from any guide entry - so a single VoD asset is sufficient to generate the "create series link" menu. That SL has a lot more options for fine-tuning: Start from particular series, HD/non-HD/HD-preferred, new-only/repeats, VoD/recordings, single-channel/multi-channel etc.
It doesn't have the ability to swap between tuners by pressing info and scroll down - so you have no direct control over what each tuner is doing save for setting recordings.
It does have "Startover" on selected channels, which behaves like the iPlayer "watch from beginning" and is effectively a cloud-based recording.