Here in Mobile, AL, we have 4G with AT&T. With AT&T I have a plan that allows me to use my Galaxy S3 as a hotspot. Being GSM, I can use the phone while still using it as a hotspot. Frankly it is as fast as our wired connection from Comcast (cable).
So if you ever get 4G where you live, that should be fast enough for you to ditch Virgin.