Verizon Pay As You Go,better than MyFi??

Millenicom is a service that uses the Verizon towers and Mifi devices so you get great coverage and it is month to month and cheaper than the Verizon pay as you go.

It also depends on where you camp. My data is dated as I have not checked or used Pay-As-You-Go for 2 years, but when I used it, there was no coverage in "Roaming". Check their map.

Verizon has very good coverage. It worked in the Mojave desert on my trip back from California in Oct 2012. I like the ability to buy usage for 7 or 30 days depending on what type of a trip I am on.

$15/week 250 MB
$60/month 3GB
$90/month 10GM

There are no other fees.

We travel about 3 months a year in the RV so this is the perfect solution for us. We have no need for mobile internet when we are land based.

As an aside, I use consumer cellular for my cell phone and pay $21 month for 500 minutes.

Sounds like you are using Millenicom. If so, that IS Verizon so if you can get a PAYG from Verizon that should give you the same service as long as you keep an eye on your actual usage. Just find out what is included in the plan.
Even better, as mentioned above, is if you currently have a smartphone from Verizon. Turn on the hotspot and use all the data you like (you just have to pay for the data). If you only use 5-10GB you pay for that. If you happen to use 20GB in a month it will cost you the same $90 you pay Millenicom. If you only use 10GB you will only pay about $40.

If you have your cell phone service through Verizon use your smart phone as your hot spot. You should have an app called Verizon Hot Spot or down load Fox Fi. We use our phones for all our internet at home as we have no other internet in our rural area. Works great just make sure to turn it off or it will kill your battery. Good luck.

We just purchased our first RV and after one trip realize a mobile wifi hotspot would be nice to have along. Looking at the various carrier's coverage maps does show that Verizon's network is the broadest especially in the hinterlands where we plan to travel.

I have been looking at various devices and their pay-as-you-go data plans. Not being retired yet means we will not need a wifi device every day. So far I think that Walmart's Straight Talk hotspot looks good. It has the cheapest rates for the minor amounts of data we will need for email, web browsing, etc. Plus it uses the Verizon network.