Based on the prices, honestly Verizon is nearly just as good of a deal, especially when you factor in their solid network. I'm really pretty disappointed in Google's offering, I was hoping for something to entice me into switching.
For Google, I would be paying $40 for two lines, then $50 for 5GB, the average of what I use right now. That's $90. Add in $10 - $15 for taxes, and we're at around $103. Now I have to buy two new Nexus phones. I either buy them outright for nearly $1,300, or 24 month payment plan at $27/m. So add-in the cost of two phones, and I'm now at $157/m.
Now my plan currently with Verizon is $188/m grand total including taxes for two lines, and 10GB of data. That's only a $30/m difference. And the Verizon plan includes Edge, which means paying my current monthly rate I can get a new phone every year and a half (once I pay off 75% of the phone), as opposed to every 2 years if I went with Google. Obviously with EITHER service, I could pay off the phone quicker and get a new one, difference is I only have to pay up to 75% of the phone with Verizon, whereas I'd have to pay off 100% of the phone with Google.
Seeing as how T-Mobile and Sprint don't have the best coverage in my area (Houston), I really see zero reason to switch over a $30/m savings, which pisses me off. I was hoping for an offering from Google that would make me ditch Verizon. Maybe their plans will evolve over time, we'll see.