Tello does offer an “unlimited” plan (unlimited talk & text plus 25 GB of high speed data - 5 GB of which may be used for hotspot) at $29/month plus taxes and regulatory recovery fees. So; a bit more per month for a bit less high speed data.
The question is whether one needs “unlimited”. If not, then Mobi, MobileX, Tello and US Mobile are all options worthy of consideration. As an aside, I’m experimenting with Helium Mobile (invitation and a dual SIM via eSIM phone required unless one lives in Miami-Dade County, FL). $5/month plus taxes and regulatory fess is tough to beat.
The bottom line point is if one is not being well served by Boost Infinite, there are plentiful options in the market.