Wilson sleek

We have the Sleek 4G. Use an external RV antenna at the house, magnetic on the road. Listed for single phone, Verizon, but works with sprint and tracphone. Will also work with both the phone and hotspot at the same time. Gotta put the phone on speaker for this last.

None. Never worked for me.

Wilson boosters are now marketed under the weBoost label. If you want so see how various brand boosters compared during extensive "real world" testing by full timers, Read this

Sometimes boosters don't help at all. Lots of variable to consider.

They have changed the name. Get the unit that supports 4G

It depends on your wants and needs... take a look at this if you want to learn what options are out there and the plusses and minuses of each
Link