I have a bit of a hybrid system. I have a Hikvision DVR which also accepts IP cameras. The DVR has accusense, motion 2.0 and loads of other features that you'd get on IP cams, but with the reliability of a tvi system.
The picture quality of my 8mp tvi cameras is pretty much identical to the 4k IP cameras I have, I much prefer the tvi when viewing live on the dvr or remotely, as there's a BIG lag in the stream from the IP cams, and the PTZ function is also severely delayed.
TVI just feels like a smoother, more responsive and uncomplicated experience in my opinion. I do however like the two way audio that a couple of my IP cameras provide, HOWEVER, it makes the conversation almost pointless with such a huge delay, but it's nice to be able to listen to the video on playback, because you never know when you might need it, but you can get that over analogue, so it's not really a feature that's exclusive to IP cams.
And it's cheaper, lmby a LOT, also, I have memory cards installed in my IP cameras, and I've never had to use them. They're just sitting in there rotting, and probably not recording, although I have fault notification on, and I've not been notified that anything has gone awry, plus, if someone steals the camera, they'll have access to everything that's on the memory card, which is a bit worrying.
All being said, for home use, I'd say a bit of a combination like mine is best. You get the benefits of digital with the DVR, and TVI is much more solid and reliable, and you can add network cameras if you need to, but if I was backed into a corner, I'd definitely choose TVI any day of the week.
I hope this helps someone.