I dont actually use my TV tuner at all, just the Panasonic. Your TV should be able to network over wifi with your PC anyway.
Not sure why NZ has such a poor choice of recorders...its appalling really, but guess it is our market size.
Personally I don't find much need to record stuff these days. I used to record when we had sky and also on our old freeview box. Our Samsung Smart TV can record but I never bother.
So much is available via streaming. We buy Netflix, get Lightbox with our internet and then have Freeveiw OD. Never short of something to watch. I wonder if I'm typical and if this is behind the low availability of recorders?