Internet booster?

jrp wrote:
" I would say if the OP are going to get the Sleek (or something similar), just get the unit first and decide after using it for a while if you do need the upgraded antenna. "

We can agree on that much.
But in remote areas of the west where you start out with a weak one bar signal, the 4" mini mag antenna that comes with the Sleek is next to useless. With the Wilson Trucker antenna I usually get 5 dB improvement; and with a more advanced BoatAnt or similar Omni antenna I get 5-10 dB improvement. all vary based on specific location conditions.
Cellular signal strength, is always variable based on your location. If you're always near cities and interstates where the signal is good, then your choice of booster & antenna is not critical. If you travel all over the sparsely populated areas out west, then a $150 antenna and a $500 booster can mean the difference in having a usable signal or not. or by adding a better external antenna to the $150 Sleek many times allows you to avoid having to buy a $500 booster.
your money, your choice

I'll give you that one, I am an East Coaster so for me remote is being more than 15 minutes from a Starbucks, not by choice it is just harder to be remote on the east coast. I guess if the OP is a West Coaster every last db may make a difference.