Check out http://visible.com (verizon) it's $40 per month for unlimited and you can use your phone as a hotspot.
I ditched Straight Talk over 2 months ago and went with Visible. I was using PDAnet to get around them not allowing data to be used as a hotspot and it was working fine. The issue I had was if you read the fine print if you exceed 60 GB usage they do a review of your account. If they somehow figured out you are using as a hot spot then you could get terminated.
You can actually get the service for as low as $25 per month.
And my LG Stylo 3 battery expanded and is fracturing the back cover. Visible will happen soon but the R2 is out of stock. Wonder if anybody else went with a better Visible phone like the motorola.
If you have a working Android phone you can trade it and get the ZTE A7 for free. I did that when the R2 was $99. I've been with Visible for 8 months and has worked great.