I have been on LTE with Verizon for awhile and I think it benefit a laptop more than a phone. Irregardless the cap is going to prevent you from really taking advantage of the speeds.
My phone is on At&t and honestly for me 3.5G is enough speed for what I do on my phone. I download the videos, adds and podcasts from home (to say on caps). That is the stuff that benefits from LTE but you are going to go through your cap really quickly if you do any of that stuff. For checking NeoGAF 3.5 is more than fast enough.
Also LTE rapes battery. I am going to mine turned off for now and when I need a super fast connection I will just turn on the mifi.
Cap what cap? Unlimited data on att baby! Love my android phone LTE is amazing regardless though, I love having fast internet no matter the device