I need a real boost!

Thanks for the great responses. By "disappointed" I mean: Only 1-2 out of 5 bars on the signal icon of the Jetpack. Dropped connections both on the phones and jetpacks. I've used the online internet speed tests and get varying numbers on both jetpack devices from one moment to the next.(download ranged 0.3-3.2, upload ranged 5.3-11.6, ping 44-80, I thought Ping they made golf clubs!) I've read that the bar indicators are not very accurate. As a test, I placed my AT&T phone 2 inches from my AT&T Jetpack...got 4/5 bars on my phone and 2/5 bars on the Jetpack. At my current location a phone call using our AT&T phones is high unreliable...dropped calls, unable to hear each party. When there is a decent connection then the speed of either Jetpack (AT&T or Verizone) is acceptable. So my disappointment isn't really the speed, it's getting and maintaining a strong signal.
Appreciate the info from the gentleman with 2 WeBoost units. Like the 30 day return policy. May go that route an test before I start drilling holes for cables in my RV's fiberglass roof.
As far as jet pack antenna...both AT&T Velocity and Verizon 8800L research indicate not compatible with external antenna....yet Amazon cells antennas for each?!