Verizon unlimited is exactly that: unlimited. Unlike ATT where "unlimited" is actually 5gb and then they throttle you, Verizon never throttles and never caps. I've literally used over 400gb one month (built a desktop computer and had to redownload my 100+ Steam game library) and I was still at 25-30mbs speed at the end of the month.
Verizon unlimited is worth more than it's weight in gold for those that actually use it.
But it's true, if you are the average person (and definitely if you don't game) and use less than 2gb, no reason not to jump ship. Paying full price on phones to keep unlimited is stupid if you are using that little of data.
Just make sure to sell your lines before you go. People pay between $300 and $2k and personally I would pay on the high end. Mobile hotspotting 2 tablets, a laptop, a desktop, and my bro-in-law's ATT iphone that doesn't get good signal when he visits is priceless