I have Netflix, Amazon Prime and Now TV. Now TV is almost a no brainer as you can cancel every few months, and then generally get offered the packages half price, or better. I pay less than £10 a month for the Movies and Entertainment (about £3.50 each) with the current offering. And I've basically been on that deal for over 12 months now.
I am always tempted to get Sky back. The interface is so useful. But to be honest, at £50+ per month, compared to about £20 with the 3 services I currently use, it's trickier. I wouldn't want to lose Netflix. There are plenty shows on there I watch. I use it all the time when I'm travelling (over 100 days a year, internationally, so the Sky app doesn't work). We don't use Amazon Prime as much for video content, but it pays for itself with the next day delivery anyway. So then, when you boil it down, it's swapping the £7 Now TV for a £50+ Sky package. Not really worth it.
Oxide, rather than buying that pvr, which I'm sure is great. I think I'd be more inclined to put that money towards a newer TV (plus HDD), that has the functionality built in, and therefore doesn't require an extra box / plug / cables. Can't disagree with Netflix though. But unless you have a 4K TV, or are planning on Netflix to be on every TV in the house simultaneously, then the cheaper one might be worth it?