I'm on day 3 and haven't really noticed. I'm in Salt Lake City, which isn't even published as a third round market yet although two reps have separately told me that techs are installing some LTE equipment already at local tower sites. Whether or not that's true, I don't know. In any event I'm not expecting LTE here until at least next summer.
Like you I'm a power user, as I suspect most S4GRU readers must be, so I was tempted to even possibly jump ship to T-Mo when upgrading from my old Epic 4G. But then I thought about it. Service would cost me about $25 more per month on T-Mobile after considering my Sprint discount, and much of the time I would drift in and out of WiMax coverage anyway with my Epic while driving around town. Often I'm using Wifi anyway, especially while at home or the office.
For something not data intensive like email it makes no difference at all to be back on 3G. Web pages load in roughly the same time because of the Note 2's faster processor and increased RAM. The only time I truly wished for a faster connection so far was when I streamed from my Slingbox.
So far I have no regrets whatsoever.
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