RW's current pricing is $5 for wifi-only, $10 for cellular with no data, $25 for 3G data, and $40 for 4G data. Both data plans include throttling after 5GB. But the new pricing model they'll start testing in May is basically the same as what Google's promising, and they announced on Monday upcoming beta testing for basically everything else that Google Fi will include.
That said, anyone streaming Netflix on their LTE connection is going to want unlimited data to start with, so neither is a good bet.