I strongly encourage anyone looking at these kits to also look at the options from Nextivity. I have the Cel-Fi Go M and it blows the doors off the Weboost that a friend of mine has in his vehicle. Granted, my setup cost about 2x what his did ($1300 versus $700) BUT, it has the following advantages:
1. Can switch between "mobile" and "base station" modes. In Base Station mode, it can boost up to 100 db (versus 50 db for the WeBoost). Thats about 100k times the signal amplification, if I am not mistaken.
2. In "mobile" mode the Cel-Fi is able to boost 65db (versus 50 db for the WeBoost). This is because the Cel-Fi is dedicated to a single carrier and thus is authorized for higher amplification. I think the 15db difference equates to about 32x the amplification versus the WeBoost.
3. The phone app is excellent. It gives you all the info you need to diagnose issues or fine-tune performance
4. Weatherized - you can mount the amp outdoors in weather or on the exterior of a vehicle - its rated for that.
In my setup, I have the amp plus two donor antennas (an RFI CDQ7195 for the vehicle and a Yagi directional for in camp) and two different inside antennas - the usual little stick-on type for inside the vehicle (glued to the roofline immediately above the rear view mirror) and a dome-type antenna for hanging in camp. With this setup, I can be on the road traveling with the RFI omnidirectional antenna grabbing signal and passing it to my phone on the dash mount with a 65db boost. Then when I get to camp, I unplug the amp, move it to my camp trailer, stand up a 25' telescoping pole with the Yagi pointed at the nearest tower, and then I hang the dome antenna under my awning. With this setup I can work effectively on my laptop with decent Internet when no one else can even get a signal.
The downside is that my setup will ONLY work with AT&T. Whereas WeBoost will work across carriers. But I only have an AT&T phone, so it works for me.
BTW, cell boosters are not the end-all, be-all for connectivity. There are times when a MIMO hotspot and a directional MIMO antenna can produce better results. I'm in the process of evaluating some options for that and plan to add that to my remote connectivity solution within the next few months.