If you use series links the options are few, if you set it to record series 2, it will also record series 3 and 4 if they are being shown, you cannot set it to record new only, so if an episode is shown on Monday and you watch it Tuesday and delete it, if it is repeated on Friday it will record again.
If you do a lot of recording and have 2 V6 boxes you will lose out on available space if you go to 360 main box and mini box setup as the mini has no hard drive, you can get a software upgrade to the 360 boxes and keep the V6 boxes and have 2TB of storage but there appears to be a lot of issues for some people with this. Although the fix is always just around the corner.
If in depth recording and Series Link controls are important I would wait till the advanced options are added to TV360. I would say the GUI, Layout and speed of TV360 is a lot better than TiVo we just need more features and apps added